Results 141 to 150 of about 2,615 (176)

Diarylheptanoids from Curcuma comosa

Phytochemistry Letters, 2009
Abstract Three new diarylheptanoids, designated 1-(3,4-dihydroxyphenyl)-7-(4-hydroxyphenyl)-(6 E )-6-hepten-3-ol ( 1 ), 1-(3-hydroxyphenyl)-7-(3,4-dihydroxyphenyl)-3-methoxy-(6 E )-6-heptene ( 2 ), (3 R , 5 R )-1-(3,4-dihydroxyphenyl)-7-phenyl-heptane-3,5-diol ( 3 ) and three known compounds, were isolated from rhizomes of Curcuma comosa ...
Rawiwun Kaewamatawong, Preecha Boonchoong, Nongnit Teerawatanasuk   +2 more
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Minor diarylheptanoid glycosides of Alnus rubra bark

Phytochemistry, 2000
The diarylheptanoid (S)-1,7-bis-(4-hydroxyphenyl)-heptan-3-one-5-O-beta-D-xylopyranosi de, and two known compounds, 1,7-bis-(3,4-dihydroxyphenyl)-heptan-3-one-5-O-beta-D-glucopyranos ide and platyphylloside were isolated from Alnus rubra bark. Structures were established by application of spectrometric techniques.
J, Chen, R F, Gonzalez-Laredo, J J, Karchesy   +2 more
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Diarylheptanoids from Garuga pinnata

Phytochemistry, 1993
Abstract The structures of three new diarylheptanoids of the biphenyl ether and biphenyl type, garuganins IV–VI, isolated from the petrol and chloroform extract of stem bark of Garuga pinnata , were established by spectroscopic methods (UV, IR, 1 H NMR, 13 C NMR) and chemical reactions.
VENKATRAMAN, G, MISHRA, AK, THOMBARE, PS, SABATA, BK   +3 more
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Structure-antiemetic-activity of some diarylheptanoids and their analogues

Phytomedicine, 2002
The structure-activity relationship of diarylheptanoids and their analogues inhibitory of emesis induced by copper sulfate in young chicks was investigated by testing 19 compounds. The compounds are 5 diarylheptanoids isolated from Alpinia katsumadai (Zingiberacea), 5 chemical derivatives of them, 6 analogues isolated from Zingiber officinale rhizome ...
Y, Yang, K, Kinoshita, K, Koyama, K, Takahashi, S, Kondo, K, Watanabe   +5 more
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The chemistry of natural diarylheptanoids

1995
Publisher Summary Diarylheptanoids constitute a distinct group of natural plant metabolites characterized by two aromatic rings linked by a linear seven-carbon aliphatic chain. They may be divided into two subgroups—that is, open chain and macrocyclic diarylheptanoids.
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Diarylheptanoids from the leaves ofAlnus hirsuta Turcz

Archives of Pharmacal Research, 2000
Diarylheptanoids, (5S)-1,7-bis-(3,4-dihydroxyphenyl)-5-hydroxyheptane-3-one (1, hirsutanonol), (5S)-1,7-bis-(3,4-dihydroxyphenyl)-heptane-3-one-5-O-beta-D-xylopyranosi de (2, oregonin), (5R)-1,7-bis-(3,4-dihydroxyphenyl)-heptane-5-O-beta-D-xylopyranoside (3), and (5R)-1,7-bis-(3,4-dihydroxyphenyl)-heptane-5-O-beta-D-glucopyranoside (4) were isolated ...
M W, Lee, M S, Park, D W, Jeong, K H, Kim, H H, Kim, S H, Toh   +5 more
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Diarylheptanoid Glycosides from Dioscorea Nipponica Rhizomes

Fitoterapia
A group of previously undescribed diarylheptanoids with mono/di-glucose substitution, diodiarylheptosides A-F (1-6), together with six known diarylheptanoids (7-12) were isolated from the rhizomes of Dioscorea nipponica. Their structures were established by comprehensive UV, IR, HR-ESI-MS and NMR analyses, and their absolute configurations were ...
Qiong-Lin, Meng, Jun, Chi, Yi-Xiao, Li, Wei-Jin, Zhang, Ling-Xia, Zhang, Zhi-Min, Wang, Li-Ping, Dai   +6 more
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Trypanocidal Diarylheptanoids from Aframomum letestuianum

Journal of Natural Products, 2003
Three new diarylheptanoids, (4Z,6E)-5-hydroxy-1-(4-hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl)hepta-4,6-dien-3-one, letestuianin A (1), (4Z,6E)-5-hydroxy-1,7-bis(4-hydroxy-3-methoxyphenyl)hepta-4,6-dien-3-one, letestuianin B (2), and 1,7-bis(4-hydroxyphenyl)heptan-3,5-dione, letestuianin C (3), as well as the known (4Z,6E)-5-hydroxy-1,7-bis(4 ...
Pierre, Kamnaing, Apollinaire, Tsopmo, Eric A, Tanifum, Marguerite H K, Tchuendem, Pierre, Tane, Johnson F, Ayafor, Olov, Sterner, Donna, Rattendi, Maurice M, Iwu, Brian, Schuster, Cyrus, Bacchi   +10 more
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Inhibitory Activity of Diarylheptanoids on Farnesyl Protein Transferase

Natural Product Research, 2004
Diarylheptanoids [curcumin (1), demethoxycurcumin (2), bisdemethoxycurcumin (3), bisdimethoxymethylcurcumin (4), and 1,2-dihydrobis(de-O-methyl)curcumin (5)] were isolated from the methanolic extract of Curcuma longa L. and a new cyclic diarylheptanoid (6) and a known Compound 7 were isolated from fruits of Alnus japonica Steud.
Hyun-Mi, Kang, Kwang-Hee, Son, Deok Cho, Yang, Dong-Cho, Han, Jong Han, Kim, Nam-In, Baek, Byoung-Mog, Kwon   +6 more
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Four new diarylheptanoids from Rhizoma Zingiberis

Journal of Asian Natural Products Research, 2018
Four new diarylheptanoids, (1S, 3R, 5R, 6R)-1, 5-epoxy-3, 6 dihydroxy-1-(4-hydroxy-3, 5-dimethoxyphenyl)-7-(4-hydroxy-3-methoxyphenyl) heptane (1), (1R, 3R, 5S)-1, 5-epoxy-3-acetoxy-1-(4, 5-dihydroxy-3-methoxyphenyl)-7-(3, 4- hydroxyphenyl) heptane (2), (3R, 5S, 6R, 7S)-3, 6-epoxy-7-hydroxyl-1-(4-hydroxyphenyl)-7-(3-methoxy-4-hydroxyphenyl) heptane (3),
Wan-Hua, Cui, Yan-Zhi, Wang, Ze-Zhi, Li, Yan, Guo, Mei-Ling, Gao, Yong-Xian, Cheng, Wei-Sheng, Feng   +6 more
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