Neoadenoloside A, a highly functionalized diterpene C-glycoside, from Isodon adenolomus

摘要

Neoadenoloside A (1), an unprecedented diterpene C-glycoside with a unique C_26 framework, along with lasiokaurin (3) were isolated from the leaves of Isodon adenolomus. The absolute configuration of 2, a derivative of 1, was determined by spectroscopic methods and single-crystal X-ray diffraction analysis.