Chemical constituents from Pteris deltodon / 中草药

Objective: To study the chemical constituents in the whole plant of Pteris deltodon. Methods: Nine compounds were isolated from 95% ethanol extract in the whole plant of P. deltodon and purified by silica gel chromatography, Sephadex LH-20, and pre-HPLC, and their structures were identified on the basis of spectroscopic data and literatures. Results: Nine compounds were isolated and elucidated as β-sitosteol (1), (22E)-5α,8α-epidioxyergosta-6,22-dien-3β-ol (2), ent-kaur-16-ene-2β,15α-diol (3), cycloart-23-en-3β,25-diol (4), cycloart-25-en-3β,24-diol (5), emodin (6), 1,7-dihydroxyxanthone (7), ursolic acid (8), and ergosterol (9). Conclusion: All the compounds are for the first time isolated from P. deltodon; Compound 4 and 5 are cycloartanes first isolated from genus Pteris L.

New 9, 19-cycloartane triterpenoid from the root of Cimicifuga foetida / 中国天然药物

AIM@#To study the 9, 19-cycloartane triterpenes from the roots of Cimicifuga foetida.@*METHOD@#Chromatographic separations by silica gel, C18 reversed phase silica gel, and high-performance liquid chromatography (HPLC) were used. All of the structures were elucidated on the basis of spectroscopic analysis and chemical methods.@*RESULTS@#Five 9, 19-cycloartane triterpenes, (3β, 12β, 15α, 24R)-12, 2'-diacetoxy-24, 25-epoxy-15-hydroxy-16, 23-dione-3-O-α-L-arabinopyranoside (1), actein (2), 23-epi-26-deoxyactein (3), asiaticoside B (4), and 12β-hydroxycimigenol (5) were isolated from the roots of Cimicifuga foetida.@*CONCLUSION@#Compound 1 is a new triterpene with two acetoxy groups at C-2' and C-12.

Studies on chemical constituents of Cimicifuga dahurica / 中草药

Object To isolate and identify the chemical constituents from the rhizome of Cimicifuga dahurica (Turcz ) Maxim Methods The different chromatographic techniques were used to isolate ten constituents, and the spectral methods, such as IR, MS, 1HNMR, 13 CNMR and 2DNMR, were used to identify the structures Results Their structures were identified as cimigenol (Ⅰ), 24 epi 7, 8 didehydrocimigenol 3 O ? D xylopyranoside (Ⅱ), 7, 8 didehydrocimigenol 3 O ? D xylopyranoside (Ⅲ), 25 O acetyl 7, 8 didehydrocimigenol 3 O ? D xylopyranoside (Ⅳ), 3 arabinosyl 24 O acetylhydroshengmanol 15 glucoside (Ⅴ), isoferulic acid (Ⅵ), (E) 3 (3′ methyl 2′ butenylidene) 2 indolinone (Ⅶ), sucrose (Ⅷ), ? sitosterol (Ⅸ) and stigmastenol 3 O ? D glucopyranoside (Ⅹ), respectively Conclusion Compounds Ⅱ Ⅳ, Ⅹ are isolated for the first time from the title plant