Journal
HELVETICA CHIMICA ACTA
Volume 95, Issue 4, Pages 643-646Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/hlca.201100425
Keywords
Plectranthus bishopianus; Abietane; Diterpenoids; Royleanone; 6 ss-hydroxy-7a-methoxy-
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Funding
- Department of Science and Technology, New Delhi [SR/SO/PS-42/2002]
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Chemical examination of the MeOH extract of Plectranthus bishopianus Benth., a rare and endangered plant, resulted in isolation of a new abietane diterpene, 6 beta-hydroxy-7a-methoxyroyleanone (1), along with two more diterpenoids, 6,7-dehydroroyleanone, and 6 beta,7a-dihydroxyroyleanone, a triterpene oleanolic acid, and two sterols, beta-sistosterol and stigmasterol. The structures of the isolated compounds were elucidated on the basis of spectroscopic data and also by comparison with authentic samples.
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