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New triterpenoids from the orchids Scaphyglottis livida and Nidema boothii
Samuel Estrada1, Laura Acevedo, Mitzi Rodriguez
1Facultad de Química, Universidad Nacional Autónoma de México, México, DF.
Natural Product Letters
|May 7, 2002
Abstract:
Two new triterpenoids, nidemin (1), a modified lanostane, and 9,19-cyclolanosta-24,24-dimethyl-25-en-3beta-yl trans-p-hydroxycinnamate (2) have been isolated from the orchids Nidema boothii and Scaphyglottis livida, respectively. The isolates were characterized by spectral methods. The structure of nidemin (1) was unambiguously confirmed by X-ray analysis.