ISOMERIC F-RING DIHYDROXYLATED 22,25-EPOXYFUROSTENE AND SPIROSTENE SAPOGENINS FROM TACCA-LEONTOPETALOIDES

被引：9

作者：

ABDELAZIZ, A

BRAIN, K

BLUNDEN, G

CRABB, T

BASHIR, AK

机构：

[1] NATL COUNCIL RES,KHARTOUM,SUDAN

[2] UNIV WALES COLL CARDIFF,WELSH SCH PHARM,CARDIFF CF1 3XF,WALES

[3] PORTSMOUTH POLYTECH,DEPT CHEM,PORTSMOUTH PO1 1DZ,ENGLAND

[4] PORTSMOUTH POLYTECH,SCH PHARM & BIOMED SCI,PORTSMOUTH PO1 1DZ,ENGLAND

来源：

PHYTOCHEMISTRY | 1990年 / 29卷 / 05期

关键词：

furospirostene; leaves; spirostene; spirotaccagenin; steroidal sapogenin; Tacca leontopetaloides; Taccaceae; taccagenin;

D O I：

10.1016/0031-9422(90)80138-7

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Taccagenin [furost-5-ene-3,26,27-triol-22,25-epoxy(3β,22R,26,27)] (C27H41O5) was isolated from the acid hydrolysate of an extract of leaves of Tacca leontopetaloides and its structure elucidated by IR, 1H NMR 13C NMR and mass spectrometry (25R)- and (25S)-spirotaccagenins [spirost-5-ene-3,25,27-triol(3β,25,27)] were also isolated and partially characterised. This is the first report of a naturally occurring 22,25-epoxyfurostene or spirostene dihydroxylated in the F-ring. The origin of these compounds is discussed. © 1990.

引用

页码：1643 / 1646

页数：4

共 9 条

[1] C-13 NMR SPECTRAL INVESTIGATIONS .10. C-13 NMR-SPECTROSCOPY OF STEROIDAL SAPOGENINS AND STEROIDAL SAPONINS [J].