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11α-Hydroxy muzigadiolide, a novel drimane sesquiterpene from the stem bark of warburgia ugandensis
(Bulletin of the Chemical Society of Ethiopia, 1999-12-03)
The plant was identiﬁed by Prof. MS Rajab by comparison with a preserved standard specimen at the National Museum I-lerbarium in Nairobi, Kenya. .
The stereoselectiveBirchreduction of pyrroles
The Birchreduction has been applied to electron-deficient pyrroles substituted with a chiral auxiliary at the C-2 position. Using either 8-phenylmenthol ortrans-2-(α-cumyl)cyclohexanol (TCC) as auxiliaries, high levels of ...