Terpenoids. XXI. The Structure and Stereochemistry of Isodotricin, a Diterpenoid of Isodon trichocarpus and I. japonicus

Abstract

The structure of isodotricin, a diterpenoid of Isodon trichocarpus and I. japonicus, was determined to be 4 by a chemical conversion from enmein (1). The more detailed investigation on the stereochemistry of C-16 led to a conclusion for the S-configuration, i. e., the structure and absolute configuration of isodotricin was established as shown in formula 21.