作者:Armandodoriano Bianco、Soren Rosendal Jensen、Jens Olesen、Pietro Passacantilli、Alessia Ramunno
DOI:10.1002/ejoc.200300348
日期:2003.11
Acid treatment of an iridoid glycoside results in the cleavage of the acetal bond between the sugar unit and the monoterpenoid aglycon. Iridoids possessing non-conjugated enol ether systems, however, undergo the hydration of the iridoid enol ether functionality in acid medium, as well as the hydrolysis of the bond. We examined the acid rearrangement of secoiridoids such as oleuropein (1) and secologanin
环烯醚萜苷的酸处理导致糖单元和单萜苷元之间的缩醛键断裂。然而,具有非共轭烯醇醚体系的环烯醚萜在酸性介质中经历环烯醇醚官能团的水合以及键的水解。我们检查了油橄榄苦苷 (1) 和赛洛甘宁 (2) 等类环烯醚萜类化合物的酸重排及其还原产物橄榄苦苷 (3) 和赛洛肝素 (4),以检查在这种情况下是否也会发生类似的行为。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)