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Hideaki Otsuka

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Susumu Kawakami; Duangporn Lhieochaiphant; Katsuyoshi Matsunami; Hideaki Otsuka; Sorasak Lhieochaiphant
Two new cembranoids from the leaves of Croton longissimus Airy Shaw.
Yuya Nomoto; Katsuyoshi Matsunami; Sachiko Sugimoto; Hideaki Otsuka
Hirtionosides A-C, gallates of megastigmane glucosides, 3-hydroxyoctanoic acid glucosides and a phenylpropanoid glucoside from the whole plants of Euphorbia hirta.
Yuka Uemura; Masatoshi Kawahata; Katsuyoshi Matsunami; Hideaki Otsuka; Sachiko Sugimoto; Yoshio Takeda; Kentaro Yamaguchi
Microtropins A-I: 6'-O-(2″S,3″R)-2″-ethyl-2″,3″-dihydroxybutyrates of aliphatic alcohol β-D-glucopyranosides from the branches of Microtropis japonica.

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2013: Susumu Kawakami; Duangporn Lhieochaiphant; Katsuyoshi Matsunami; Hideaki Otsuka; Sorasak Lhieochaiphant
Two new cembranoids from the leaves of Croton longissimus Airy Shaw.
Journal of natural medicines 2013;67(2):410-4.
2013: Yuya Nomoto; Katsuyoshi Matsunami; Sachiko Sugimoto; Hideaki Otsuka
Hirtionosides A-C, gallates of megastigmane glucosides, 3-hydroxyoctanoic acid glucosides and a phenylpropanoid glucoside from the whole plants of Euphorbia hirta.
Journal of natural medicines 2013;67(2):350-8.
2013: Yuka Uemura; Masatoshi Kawahata; Katsuyoshi Matsunami; Hideaki Otsuka; Sachiko Sugimoto; Yoshio Takeda; Kentaro Yamaguchi
Microtropins A-I: 6'-O-(2″S,3″R)-2″-ethyl-2″,3″-dihydroxybutyrates of aliphatic alcohol β-D-glucopyranosides from the branches of Microtropis japonica.
Phytochemistry 2013;87():140-7.
2013: Sachiko Sugimoto; Katsuyoshi Matsunami; Hideaki Otsuka
Structures of Ryobunins A-C from the Leaves of Clethra barbinervis.
Chemical & pharmaceutical bulletin 2013;61(5):581-6.
2013: Susumu Kawakami; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda; Hiroki Toyoda; Liva Harinantenaina; Masatoshi Kawahata; Kentaro Yamaguchi
Eight new diterpenoids and two new nor-diterpenoids from the stems of Croton cascarilloides.
Chemical & pharmaceutical bulletin 2013;61(4):411-8.
2013: Zhimin Zhao; Ashok Kumar; Katsuyoshi Matsunami; Nisha Negi; Hideaki Otsuka; Devendra Singh Negi
A condensed phenylpropanoid glucoside and pregnane saponins from the roots of Hemidesmus indicus.
Journal of natural medicines 2013;67(1):137-42.
2012: Ayumi Iha; Masatoshi Kawahata; Katsuyoshi Matsunami; Hideaki Otsuka; Kentaro Yamaguchi; Yoshio Takeda
Three new aliphatic glycosides from the leaves of Antidesma japonicum Sieb. et Zucc.
Journal of natural medicines 2012;66(4):664-70.
2012: Yuya Takeshige; Susumu Kawakami; Duangporn Lhieochaiphant; Katsuyoshi Matsunami; Hideaki Otsuka; Sorasak Lhieochaiphant
Oblongionosides A-F, megastigmane glycosides from the leaves of Croton oblongifolius Roxburgh.
Phytochemistry 2012;80():132-6.
2012: Sachiko Sugimoto; Katsuyoshi Matsunami; Hideaki Otsuka
Medicinal plants of Thailand. II: chemical studies on the seed kernels of Entada rheedei Sprengel.
Journal of natural medicines 2012;66(3):552-7.
2012: Yoshihiro Iwamoto; Katsuyoshi Matsunami; Liva Harinantenaina; Sachiko Sugimoto; Hideaki Otsuka
Entadosides A-D, triterpene saponins and a glucoside of the sulphur-containing amide from the kernel nuts of Entada phaseoloides (L.) Merrill.
Journal of natural medicines 2012;66(2):321-8.
2012: Ayano Matsushige; Yaichiro Kotake; Katsuyoshi Matsunami; Hideaki Otsuka; Shigeru Ohta
Three new megastigmanes from the leaves of Annona muricata.
Journal of natural medicines 2012;66(2):284-91.
2012: Yukiko Yamashita-Higuchi; Sachiko Sugimoto; Katsuyoshi Matsunami; Hideaki Otsuka
Reinvestigation of structures of robustasides B and C, and isolation of (E)-2,5-dihydroxycinnamic acid esters of arbutin and glucose from the leaves of Grevillea robusta.
Chemical & pharmaceutical bulletin 2012;60(10):1347-50.
2012: Ayano Matsushige; Shigeru Ohta; Hideaki Otsuka; Yaichiro Kotake; Katsuyoshi Matsunami; Yoshio Takeda
Annonamine, a new aporphine alkaloid from the leaves of Annona muricata.
Chemical & pharmaceutical bulletin 2012;60(2):257-9.
2012: Madoka Ochi; Hideaki Otsuka; Katsuyoshi Matsunami; Yoshio Takeda
A new iridoid glycoside and NO production inhibitory activity of compounds isolated from Russelia equisetiformis.
Journal of natural medicines 2012;66(1):227-32.
2011: Hitomi Sumioka; Liva Harinantenaina; Masatoshi Kawahata; Katsuyoshi Matsunami; Hideaki Otsuka; Kentaro Yamaguchi
Linderolides A-F, eudesmane-type sesquiterpene lactones and linderoline, a germacrane-type sesquiterpene from the roots of Lindera strychnifolia and their inhibitory activity on NO production in RAW 264.7 cells in vitro.
Phytochemistry 2011;72(17):2165-71.
2011: Yoshiko Tsuboi; Takashi Doi; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Gallates of isoorientin and (2S)-1,2-propanediol glucoside from the leaves of Schoepfia jasminodora.
Journal of natural medicines 2011;65(3-4):617-22.
2011: Yumi Ueguchi; Katsuyoshi Matsunami; Hideaki Otsuka; Kazunari Kondo
Constituents of cultivated Agaricus blazei.
Journal of natural medicines 2011;65(2):307-12.
2011: Aya Hisaeda; Katsuyoshi Matsunami; Hideaki Otsuka; Yoshio Takeda
Flavonol glycosides from the leaves of Indigofera zollingeriana.
Journal of natural medicines 2011;65(2):360-3.
2011: Wen-Hu Cai; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
A glycerol α-D-glucuronide and a megastigmane glycoside from the leaves of Guettarda speciosa L.
Journal of natural medicines 2011;65(2):364-9.
2011: Katsuyoshi Matsunami; Hideaki Otsuka; Yoshio Takeda
Myrseguinosides A-E, five new glycosides from the fruits of Myrsine seguinii.
Chemical & pharmaceutical bulletin 2011;59(10):1274-80.
2011: Takahiro Nakano; Katsuyoshi Matsunami; Sachiko Sugimoto; Hideaki Otsuka
Dianthosaponins A-F, triterpene saponins, flavonoid glycoside, aromatic amide glucoside and γ-pyrone glucoside from Dianthus japonicus.
Chemical & pharmaceutical bulletin 2011;59(9):1141-8.
2011: Zhimin Zhao; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Tareciliosides H-M: further cycloartane glycosides from leaves of Tarenna gracilipes.
Chemical & pharmaceutical bulletin 2011;59(7):902-5.
2011: Mamdouh Nabil Samy; Hany Ezzat Khalil; Sachiko Sugimoto; Katsuyoshi Matsunami; Hideaki Otsuka; Mohamed Salah Kamel
Three new flavonoid glycosides, byzantionoside B 6'-O-sulfate and xyloglucoside of (Z)-hex-3-en-1-ol from Ruellia patula.
Chemical & pharmaceutical bulletin 2011;59(6):725-9.
2011: Sachiko Sugimoto; Katsuyoshi Matsunami; Hideaki Otsuka
Medicinal plants of Thailand. I structures of rheedeiosides A-D and cis-entadamide A β-D-glucopyranoside from the seed kernels of Entada rheedei.
Chemical & pharmaceutical bulletin 2011;59(4):466-71.
2011: Rene Angelo Sarmiento Macahig; Katsuyoshi Matsunami; Hideaki Otsuka
Chemical studies on an endemic Philippine plant: sulfated glucoside and seco-A-ring triterpenoids from Dillenia philippinensis.
Chemical & pharmaceutical bulletin 2011;59(3):397-401.
2011: Junko Shitamoto; Sachiko Sugimoto; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Tricalysionoside A, a megastigmane gentiobioside, sulfatricalysines A-F, and tricalysiosides X-Z, ent-kaurane glucosides, from the leaves of Tricalysia dubia.
Chemical & pharmaceutical bulletin 2011;59(1):72-7.
2011: Susumu Kawakami; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Crotonionosides A-G: megastigmane glycosides from leaves of Croton cascarilloides Räuschel.
Phytochemistry 2011;72(1):147-53.
2011: Yuka Koyama; Miwako Yamamoto; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Prenylated flavonoid glucoside and two aliphatic alcohol glycosides from the leaves of Euodia meliaefolia (Hance) Benth.
Journal of natural medicines 2011;65(1):212-6.
2010: Amira Samir Wanas; Katsuyoshi Matsunami; Hideaki Otsuka; Samar Yahie Desoukey; Mostafa Ahmed Fouad; Mohamed Salah Kamel
Triterpene glycosides and glucosyl esters, and a triterpene from the leaves of Schefflera actinophylla.
Chemical & pharmaceutical bulletin 2010;58(12):1596-601.
2010: Katsuyoshi Matsunami; Hideaki Otsuka; Yoshio Takeda; Toshio Miyase
Reinvestigation of the absolute stereochemistry of megastigmane glucoside, icariside B(5).
Chemical & pharmaceutical bulletin 2010;58(10):1399-402.
2010: Zhimin Zhao; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda; Masatoshi Kawahata; Kentaro Yamaguchi
Schefflerins A-G, new triterpene glucosides from the leaves of Schefflera arboricola.
Chemical & pharmaceutical bulletin 2010;58(10):1343-8.
2010: Katsuyoshi Matsunami; Jiro Nagashima; Sachiko Sugimoto; Hideaki Otsuka; Yoshio Takeda; Duangporn Lhieochaiphant; Sorasak Lhieochaiphant
Megastigmane glucosides and an unusual monoterpene from the leaves of Cananga odorata var. odorata, and absolute structures of megastigmane glucosides isolated from C. odorata var. odorata and Breynia officinalis.
Journal of natural medicines 2010;64(4):460-7.
2010: Yukiko Yamashita; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
5-Alkylresorcinol glucosides from the leaves of Grevillea robusta Allan Cunningham.
Journal of natural medicines 2010;64(4):474-7.
2010: Jiro Nagashima; Katsuyoshi Matsunami; Hideaki Otsuka; Duangporn Lhieochaiphant; Sorasak Lhieochaiphant
The unusual canangafruticosides A-E: five monoterpene glucosides, two monoterpenes and a monoterpene glucoside diester of the aryldihydronaphthalene lignan dicarboxylic acid from leaves of Cananga odorata var. fruticosa.
Phytochemistry 2010;71(13):1564-72.
2010: Junko Shitamoto; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Crotalionosides A-C, three new megastigmane glucosides, two new pterocarpan glucosides and a chalcone C-glucoside from the whole plants of Crotalaria zanzibarica.
Chemical & pharmaceutical bulletin 2010;58(8):1026-32.
2010: Yuka Koyama; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Microtropiosides A-F: ent-Labdane diterpenoid glucosides from the leaves of Microtropis japonica (Celastraceae).
Phytochemistry 2010;71(5-6):675-81.
2010: Akinori Mimura; Hitomi Sumioka; Katsuyoshi Matsunami; Hideaki Otsuka
Conjugates of an abscisic acid derivative and phenolic glucosides, and a new sesquiterpene glucoside from Lindera strychnifolia.
Journal of natural medicines 2010;64(2):153-60.
2010: Katsuyoshi Matsunami; Hideaki Otsuka; Yoshio Takeda
Structural revisions of blumenol C glucoside and byzantionoside B.
Chemical & pharmaceutical bulletin 2010;58(3):438-41.
2010: Junko Shitamoto; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Elaeocarpionoside, a megastigmane glucoside from the leaves of Elaeocarpus japonicus Sieb. et Zucc.
Journal of natural medicines 2010;64(1):104-8.
2010: Rene Angelo Macahig; Liva Harinantenaina; Katsuyoshi Matsunami; Hideaki Otsuka; Yoshio Takeda; Takakazu Shinzato
Secoiridoid and iridoid glucosides from the leaves of Fraxinus griffithii.
Journal of natural medicines 2010;64(1):1-8.
2009: Wen-Hu Cai; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Lignan and neolignan glucosides, and tachioside 2'-O-4''-O-methylgallate from the leaves of Glochidion rubrum.
Journal of natural medicines 2009;63(4):408-14.
2009: Wen-Hu Cai; Katsuyoshi Matsunami; Hideaki Otsuka
Supinaionosides A and B: megastigmane glucosides and supinanitrilosides A-F: hydroxynitrile glucosides from the whole plants of Euphorbia supina RAFINESQUE.
Chemical & pharmaceutical bulletin 2009;57(8):840-5.
2009: Katsuyoshi Matsunami; Hideaki Otsuka; Kazunari Kondo; Takakazu Shinzato; Masatoshi Kawahata; Kentaro Yamaguchi; Yoshio Takeda
Absolute configuration of (+)-pinoresinol 4-O-[6''-O-galloyl]-beta-D-glucopyranoside, macarangiosides E, and F isolated from the leaves of Macaranga tanarius.
Phytochemistry 2009;70(10):1277-85.
2009: Da Peng Zhao; Katsuyoshi Matsunami; Hideaki Otsuka
Iridoid glucoside, (3R)-oct-1-en-3-ol glycosides, and phenylethanoid from the aerial parts of Caryopteris incana.
Journal of natural medicines 2009;63(3):241-7.
2009: Susumu Kawakami; Katsuyoshi Matsunami; Hideaki Otsuka; Masatoshi Kawahata; Kentaro Yamaguchi
Chemical constituents of imported Rosae fructus.
Journal of natural medicines 2009;63(1):46-51.
2009: Etsuko Sueyoshi; Qian Yu; Katsuyoshi Matsunami; Hideaki Otsuka
Three new olefinic acetogenin glycosides from leaves of Staphylea bumalda DC.
Journal of natural medicines 2009;63(1):61-4.
2008: Shiori Kawakami; Liva Harinantenaina; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Macaflavanones A-G, prenylated flavanones from the leaves of Macaranga tanarius.
Journal of natural products 2008;71(11):1872-6.
2008: Yukiko Yamashita; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Grevillosides A-F: glucosides of 5-alkylresorcinol derivatives from leaves of Grevillea robusta.
Phytochemistry 2008;69(15):2749-52.
2008: Moe Kanemoto; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Choken Ishigaki; Yoshio Takeda
Chlorine-containing iridoid and iridoid glucoside, and other glucosides from leaves of Myoporum bontioides.
Phytochemistry 2008;69(13):2517-22.
2008: Liva Harinantenaina; Katsuyoshi Matsunami; Hideaki Otsuka
Chemical and biologically active constituents of Pteris multifida.
Journal of natural medicines 2008;62(4):452-5.
2008: Yoshio Takeda; Kaori Yano; Hisako Ayabe; Toshiya Masuda; Hideaki Otsuka; Etsuko Sueyoshi; Takakazu Shinzato; Mitsunori Aramoto
Glycosidic constituents of the leaves of an Okinawan Leguminosae plant, Derris trifoliata Lour.
Journal of natural medicines 2008;62(4):476-8.
2008: Zhimin Zhao; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Yoshio Takeda
Tareciliosides A--G: Cycloartane glycosides from leaves of Tarenna gracilipes (HAY.) OHWI.
Chemical & pharmaceutical bulletin 2008;56(8):1153-8.
2008: Hideaki Otsuka; Hidenori Kuwabara; Hiromi Hoshiyama
Identification of sucrose diesters of aryldihydronaphthalene-type lignans from Trigonotis peduncularis and the nature of their fluorescence.
Journal of natural products 2008;71(7):1178-81.
2008: Naoko Tamaki; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Mitsunori Aramoto; Yoshio Takeda
Rearranged ent-kauranes from the stems of Tricalysia dubia and their biological activities.
Journal of natural medicines 2008;62(3):314-20.
2008: Miwako Yamamoto; Takeyuki Akita; Yuka Koyama; Etsuko Sueyoshi; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Atsushi Takashima; Mitsunori Aramoto; Yoshio Takeda
Euodionosides A-G: megastigmane glucosides from leaves of Euodia meliaefolia.
Phytochemistry 2008;69(7):1586-96.
2008: Yoshio Takeda; Maki Tomonari; Shihoko Arimoto; Toshiya Masuda; Hideaki Otsuka; Katsuyoshi Matsunami; Gisho Honda; Michiho Ito; Yoshihisa Takaishi; Fumiyuki Kiuchi; Olimjon K Khodzhimatov; Ozodbek Ashurmetov
A new phenolic glucoside from an Uzbek medicinal plant, Origanum tyttanthum.
Journal of natural medicines 2008;62(1):71-4.
2008: Liva Harinantenaina; Katsuyoshi Matsunami; Hideaki Otsuka; Masatoshi Kawahata; Kentaro Yamaguchi; Yoshinori Asakawa
Secondary metabolites of Cinnamosma madagascariensis and their alpha-glucosidase inhibitory properties.
Journal of natural products 2008;71(1):123-6.
2007: Hideaki Otsuka; Junko Shitamoto; Dong-Hui He; Katsuyoshi Matsunami; Takakazu Shinzato; Mitsunori Aramoto; Yoshio Takeda; Tripetch Kanchanapoom
Tricalysiosides P-U: Ent-kaurane glucosides and a labdane glucoside from leaves of Tricalysia dubia OHWI.
Chemical & pharmaceutical bulletin 2007;55(11):1600-5.
2006: Ken-ichi Morimura; Asuka Gatayama; Reiki Tsukimata; Katsuyoshi Matsunami; Hideaki Otsuka; Eiji Hirata; Takakazu Shinzato; Mitsunori Aramoto; Yoshio Takeda
5-O-glucosyldihydroflavones from the leaves of Helicia cochinchinensis.
Phytochemistry 2006;67(24):2681-5.
2006: Etsuko Sueyoshi; Hui Liu; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Mitsunori Aramoto; Yoshio Takeda
Bridelionosides A-F: Megastigmane glucosides from Bridelia glauca f. balansae.
Phytochemistry 2006;67(22):2483-93.
2006: Katsuyoshi Matsunami; Ichiko Takamori; Takakazu Shinzato; Mitsunori Aramoto; Kazunari Kondo; Hideaki Otsuka; Yoshio Takeda
Radical-scavenging activities of new megastigmane glucosides from Macaranga tanarius (L.) MULL.-ARG.
Chemical & pharmaceutical bulletin 2006;54(10):1403-7.
2005: Dong-Hui He; Katsuyoshi Matsunami; Hideaki Otsuka; Takakazu Shinzato; Mitsunori Aramoto; Masahiko Bando; Yoshio Takeda
Tricalysiosides H-O: Ent-kaurane glucosides from the leaves of Tricalysia dubia.
Phytochemistry 2005;66(24):2857-64.
2005: Qian Yu; Katsuyoshi Matsunami; Hideaki Otsuka; Yoshio Takeda
Staphylionosides A-K: megastigmane glucosides from the leaves of Staphylea bumalda DC.
Chemical & pharmaceutical bulletin 2005;53(7):800-7.
2005: Yoshio Takeda; Toshiya Masuda; Hiroyuki Morikawa; Hisako Ayabe; Eiji Hirata; Takakazu Shinzato; Mitsunori Aramoto; Hideaki Otsuka
Lanceocrepidiasides A-F, glucosides of guaiane-type sesquiterpene from Crepidiastrum lanceolatum.
Phytochemistry 2005;66(6):727-32.
2004: Hiroyuki Morikawa; Ryoji Kasai; Hideaki Otsuka; Eiji Hirata; Takakazu Shinzato; Mitsunori Aramoto; Yoshio Takeda
Terpenic and phenolic glycosides from leaves of Breynia officinalis HEMSL.
Chemical & pharmaceutical bulletin 2004;52(9):1086-90.
2004: Hideaki Otsuka; Yoshio Takeda; Eiji Hirata; Takakazu Shinzato; Masahiko Bando
Glochidiolide, isoglochidiolide, acuminaminoside, and glochidacuminosides A-D from the leaves of Glochidion acuminatum MUELL.
Chemical & pharmaceutical bulletin 2004;52(5):591-6.
2004: Yoshio Takeda; Hideko Shimizu; Toshiya Masuda; Eiji Hirata; Takakazu Shinzato; Masahiko Bando; Hideaki Otsuka
Lasianthionosides A-C, megastigmane glucosides from leaves of Lasianthus fordii.
Phytochemistry 2004;65(4):485-9.
2004: Yoshio Takeda; Yoshihiro Okada; Toshiya Masuda; Eiji Hirata; Takakazu Shinzato; Hideaki Otsuka
C,O-bisglycosylapigenins from the leaves of Rhamnella inaequilatera.
Phytochemistry 2004;65(4):463-8.
2003: Hidenori Kuwabara; Kyoko Mouri; Hideaki Otsuka; Ryoji Kasai; Kazuo Yamasaki
Tricin from a malagasy connaraceous plant with potent antihistaminic activity.
Journal of natural products 2003;66(9):1273-5.
2003: Hideaki Otsuka; Eiji Hirata; Takakazu Shinzato; Yoshio Takeda
Stereochemistry of megastigmane glucosides from Glochidion zeylanicum and Alangium premnifolium.
Phytochemistry 2003;62(5):763-8.
2003: Hideaki Otsuka; Hidehiko Kijima; Eiji Hirata; Takakazu Shinzato; Anki Takushi; Masahiko Bando; Yoshio Takeda
Glochidionionosides A-D: megastigmane glucosides from leaves of Glochidion zeylanicum (Gaertn.) A. Juss.
Chemical & pharmaceutical bulletin 2003;51(3):286-90.
2002: Yoshio Takeda; Hideko Shimidzu; Kenta Mizuno; Sachiyo Inouchi; Toshiya Masuda; Eiji Hirata; Takakazu Shinzato; Mitsunori Aramoto; Hideaki Otsuka
An iridoid glucoside dimer and a non-glycosidic iridoid from the leaves of Lasianthus wallichii.
Chemical & pharmaceutical bulletin 2002;50(10):1395-7.
2002: Qian Yu; Hideaki Otsuka; Eiji Hirata; Takakazu Shinzato; Yoshio Takeda
Turpinionosides A-E: megastigmane glucosides from leaves of Turpinia ternata Nakai.
Chemical & pharmaceutical bulletin 2002;50(5):640-4.
2002: Dong-Hui He; Hideaki Otsuka; Eiji Hirata; Takakazu Shinzato; Masahiko Bando; Yoshio Takeda
Tricalysiosides A-G: rearranged ent-kauranoid glycosides from the leaves of Tricalysia dubia.
Journal of natural products 2002;65(5):685-8.
2002: Hideaki Otsuka; Akie Tamaki
Platanionosides D-J: megastigmane glycosides from the leaves of Alangium platanifolium (Sieb. et Zucc.) Harms var. platanifolium Sieb. et Zucc.
Chemical & pharmaceutical bulletin 2002;50(3):390-4.
2001: Hideaki Otsuka; X N Zhong; Eiji Hirata; Takakazu Shinzato; Yoshio Takeda
Myrsinionosides A-E: megastigmane glycosides from the leaves of Myrsine seguinii Lev.
Chemical & pharmaceutical bulletin 2001;49(9):1093-7.
2001: Yoshio Takeda; N Isai; Toshiya Masuda; Gisho Honda; Yoshihisa Takaishi; Michiho Ito; Hideaki Otsuka; Ozodbek Ashurmetov; Olimjon K Khodzhimatov
Phlomisflavosides A and B, new flavonol bisglycosides from Phlomis spinidens.
Chemical & pharmaceutical bulletin 2001;49(8):1039-41.
2001: Hideaki Otsuka; I Hirata; Takakazu Shinzato; Yoshio Takeda
Glochiflavanosides A-D: flavanol glucosides from the leaves of Glochidion zeylanicum (Gaertn) A. Juss.
Chemical & pharmaceutical bulletin 2001;49(7):921-3.
2001: Hideaki Otsuka; K Kijima
An iridoid gentiobioside, a benzophenone glucoside and acylated flavone C-glycosides from Tripterospermum japonicum (Sieb. et Zucc.) Maxim.
Chemical & pharmaceutical bulletin 2001;49(6):699-702.
2000: Akie Tamaki; T Ide; Hideaki Otsuka
Phenolic glycosides from the leaves of Alangium platanifolium var. platanifolium.
Journal of natural products 2000;63(10):1417-9.
2000: Yoshio Takeda; K Yanagihara; Toshiya Masuda; Hideaki Otsuka; Gisho Honda; Yoshihisa Takaishi; Ekrem Sezik; Erdem Yesilada
Labdane diterpenoids from Marrubium globosum ssp. globosum.
Chemical & pharmaceutical bulletin 2000;48(8):1234-5.
2000: Hideaki Otsuka; Eiji Hirata; Takakazu Shinzato; Yoshio Takeda
Isolation of lignan glucosides and neolignan sulfate from the leaves of Glochidion zeylanicum (Gaertn) A. Juss.
Chemical & pharmaceutical bulletin 2000;48(7):1084-6.
2000: Yoshio Takeda; Y Okada; Toshiya Masuda; Eiji Hirata; Takakazu Shinzato; Anki Takushi; Q Yu; Hideaki Otsuka
New megastigmane and tetraketide from the leaves of Euscaphis japonica.
Chemical & pharmaceutical bulletin 2000;48(5):752-4.
2000: Yoshio Takeda; H Matsumura; Toshiya Masuda; Gisho Honda; Hideaki Otsuka; Yoshihisa Takaishi; Ekrem Sezik; Erdem Yesilada
Phlorigidosides A-C, iridoid glucosides from Phlomis rigida.
Phytochemistry 2000;53(8):931-5.
2000: Hideaki Otsuka; Eiji Hirata; Anki Takushi; Takakazu Shinzato; Yoshio Takeda; Masahiko Bando; M Kido
Glochidionolactones A-F: butenolide glucosides from leaves of Glochidion zeylanicum (GAERTN) A. JUSS.
Chemical & pharmaceutical bulletin 2000;48(4):547-51.
2000: H Sudo; T Ide; Hideaki Otsuka; Eiji Hirata; Anki Takushi; Takakazu Shinzato; Yoshio Takeda
Megastigmane, benzyl and phenethyl alcohol glycosides, and 4,4'-dimethoxy-beta-truxinic acid catalpol diester from the leaves of Premna subscandens MERR.
Chemical & pharmaceutical bulletin 2000;48(4):542-6.
1999: H Sudo; K Kijima; Hideaki Otsuka; T Ide; Eiji Hirata; Yoshio Takeda; M Isaji; Y Kurashina
A collagen network formation effector from leaves of Premna subscandens.
Chemical & pharmaceutical bulletin 1999;47(9):1341-3.
1999: Akie Tamaki; Hideaki Otsuka; T Ide
Platanionosides A-C, megastigmane diglycosides from the leaves of Alangium platanifolium.
Journal of natural products 1999;62(7):1074-6.
1997: Yoshio Takeda; H Zhang; T Matsumoto; Hideaki Otsuka; Y Oosio; Gisho Honda; M Tabata; T Fujita; H Sun; Ekrem Sezik; Erdem Yesilada
Megastigmane glycosides from Salvia nemorosa.
Phytochemistry 1997;44(1):117-20.
1996: H Kijima; Hideaki Otsuka; T Ide; C Ogimi; E Hirata; A Takushi; Yoshio Takeda
Glycosides of megastigmane and of the simple alcohols from Alangium premnifolium.
Phytochemistry 1996;42(3):723-7.
1995: Yoshio Takeda; Y Morimoto; T Matsumoto; C Ogimi; E Hirata; A Takushi; Hideaki Otsuka
Iridoid glucosides from the leaves and stems of Duranta erecta.
Phytochemistry 1995;39(4):829-33.
1995: S Yamamura; L R Simpol; K Ozawa; K Ohtani; Hideaki Otsuka; R Kasai; K Yamasaki; W G Padolina
Antiallergic dimeric prenylbenzoquinones from Ehretia microphylla.
Phytochemistry 1995;39(1):105-10.
1995: Hideaki Otsuka; M Yao; K Kamada; Yoshio Takeda
Alangionosides G-M: glycosides of megastigmane derivatives from the leaves of Alangium premnifolium.
Chemical & pharmaceutical bulletin 1995;43(5):754-9.
1990: Hideaki Otsuka; Yoshio Takeda; K Yamasaki
Xyloglucosides of benzyl and phenethyl alcohols and Z-hex-3-en-1-ol from leaves of Alangium platanifolium var. trilobum.
Phytochemistry 1990;29(11):3681-3.
1988: Hideaki Otsuka; Y Hirai; T Nagao; K Yamasaki
Anti-inflammatory activity of benzoxazinoids from roots of Coix lachryma-jobi var. ma-yuen.
Journal of natural products 1988;51(1):74-9.