The absolute stereostructures of three rare D:B-friedobaccharane skeleton triterpenes from the leaves of Salacia chinensis
摘要:
Three new rare D:B-friedobaccharane skeleton triterpenes named foliasalacins D-1 (1), D-2 (2), and D-3 (3) together with the 20 known ones (4-23) were isolated from the leaves of Salocia chinensis Linn., collected in Thailand. The absolute stereostructures of the D:B-friedobaccharane-type compounds (1-3) were characterized on the basis of chemical and physiochemical evidences. (c) 2008 Elsevier Ltd. All rights reserved.