cheminform abstract: studies on the constituents of viburnum species. part 17. new dammarane-type...

1998 terpenes terpenes U 0200 12 - 154 Studies on the Constituents of Viburnum Species. Part 17. New Dammarane-Type Triterpenoids from Viburnum dilatatum THUNB. — Five new dammarane-type triterpenoids, viburnols A–E, are isolated and their structures determined by spectroscopic studies. Viburnols A, B and C, (I), (IIa) and (IIb), respectively, are the ﬁrst examples of a new class of modiﬁed dammarane triterpenes. — (MACHIDA, K.; KIKUCHI, M.; Chem. Pharm. Bull. 45 (1997) 10, 1589-1592; Tohoku Coll. Pharm., Aoba, Sendai 981, Japan; EN) 1

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Page 1: ChemInform Abstract: Studies on the Constituents of Viburnum Species. Part 17. New Dammarane-Type Triterpenoids from Viburnum dilatatum THUNB

1998 terpenes

terpenesU 0200

12 - 154Studies on the Constituents of Viburnum Species. Part 17. NewDammarane-Type Triterpenoids from Viburnum dilatatum THUNB.— Five new dammarane-type triterpenoids, viburnols A–E, are isolated andtheir structures determined by spectroscopic studies. Viburnols A, B and C, (I),(IIa) and (IIb), respectively, are the first examples of a new class of modifieddammarane triterpenes. — (MACHIDA, K.; KIKUCHI, M.; Chem. Pharm.Bull. 45 (1997) 10, 1589-1592; Tohoku Coll. Pharm., Aoba, Sendai 981, Japan;EN)

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