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Saponins with an Unusual Secoursene Skeleton from Sesamum alatum T HONN .
Author(s) -
Potterat Olivier,
Hostettmann Kurt,
StoeckliEvans Helen,
Saadou Mahamane
Publication year - 1992
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19920750318
Subject(s) - chemistry , verbascoside , sesamum , stereochemistry , skeleton (computer programming) , glycoside , anatomy , medicine , horticulture , biology
Three new saponins, alatoside A–C ( 4a, 5 , and 6a , resp.), with a 18,19‐secours‐12‐ene skeleton were isolated from the aerial parts of Sesamum alatum T HONN . (Pedaliaceae) by preparative liquid chromatography. Their structures were elucidated by spectroscopic methods, including X‐ray diffraction analysis, and by chemical degradation (acidic and enzymatic hydrolyses). In addition, verbascoside ( 1 ) and two cyclohexylethanol derivatives, rengyol ( 2a ) and isorengyol ( 3a ), were isolated and identified.