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Published on: February 3, 2017
Two Novel Spirostene Glycosides from Selaginella chrysocaulos and their Chemotaxonomic Significance
Abstract:
During an investigation of the Indian heterosporous fern Selaginella chrysocaulos, two novel C28 spirostene monosides, chrysocauloside A and B were identified. Chrysocauloside A (1β,3β-dihydroxy-20S,22R-spirost-5-ene-1-yl β-D-glucopyranoside) and chrysocauloside B (1β,3β-dihydroxy-20S,22R-spirost-5-ene-1-yl β-D-galactopyranoside) are O-glycosylated at C-1 and each bear a methyl group at C-24 and C-25. Spectroscopic (NMR) and MS data for the new compounds are given and the taxonomic significance of the occurrence of spirostenes in the group of Lycophyta is discussed.
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