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Triterpenoids from the orchids Agrostophyllum brevipes and Agrostophyllum callosum
P L Majumder1, S Majumder, S Sen
1Department of Chemistry, University College of Science, 92, Acharya Prafulla Chandra Road, Kolkata-700 009, India. priyalalm@hotmail.com
Abstract:
Agrostophyllinol and agrostophyllinone, two new triterpenoids, were isolated from the orchid Agrostophyllum brevipes. Agrostophyllinone was also isolated from another orchid Agrostophyllum callosum. The structures of agrostophyllinol and agrostophyllinone were established as 24-methylene-lanosta-9(11)-en-3beta-ol (5a) and 24-methylene-lanosta-9(11)-en-3-one (5c), respectively, from spectral and chemical evidence. The above triterpenoids are of considerable biogenetic importance.
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