Journal article
Crotaleschenine, an alkaloid of Crotalaria leschenaultii
LW Smith, JA Edgar, RI Willing, RW Gable, MF Mackay, OP Suri, CK Atal, CCJ Culvenor
Australian Journal of Chemistry | CSIRO PUBLISHING | Published : 1988
DOI: 10.1071/CH9880429
Abstract
An alkaloid of Crotalaria leschenaultii DC., previously reported as crispatine and now named crotaleschenine, has been re-investigated and shown to be (7ß, 8a-H, 12a, 13a, 14a)-12ß-hydroxy- 1, 2-didehydrocrotalane-11, 15-dione.1 Spectroscopic data are presented and the stereochemistry determined by X-ray crystallography. The esterifying acid of crotaleschenine is identical with that of retusine, which is thereby determined as (1a, 7ß, 8a-H, 12a, 13a, 14a)-12ß-hydroxycrotalane-11, 15-dione. © 1988 ASEG.