Die Pharmazie 2005-Jan
Neolignan and megastigmane glycosides from the leaves of Pterospermum semisagittatum.
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Three compounds namely, (7S,8R)-dihydrodehydrodiconiferyl alcohol-9'-O-beta-D-glucopyranoside (1), 10-hydroxy-4,7-megastigmadien-3-one-9-O-beta-D-glucopyranoside (2) and 9-hydroxy-4,7-megastigmadien-3-one-10-O-beta-D-glucopyranoside (3) were isolated from the methanol extract of Pterospermum semisagittatum. The structures of these compounds were elucidated by spectroscopic methods. While glycosides 2 and 3 appear to be new, this is the third report of isolation of compound 1 from any natural source.