Affiliation:
1. College of Science Sichuan Agricultural University 46 Xinkang Rd. Ya'an Sichuan 625014 China
2. College of Chemistry Sichuan University 29 Wangjiang Rd. Chengdu Sichuan 610064 China
Abstract
AbstractEnt‐kaurane diterpenes are a large group of natural products, with more than 1,000 compounds since their discovery. Due to their excellent biological activities and complex polycyclic structures, these compounds have attracted organic synthesis chemists around the world to be devoted to achieve their total synthesis. At present, the isolated C‐20‐oxygenated ent‐kaurane diterpenes are the most abundant of these natural products, reaching more than 350 in number. However, only total syntheses of 3,20‐epoxy, 7,20‐epoxy and 19,20‐lactone ent‐kaurane diterpenes have been reported. In this review, we elaborate the synthesis of these three types of C‐20 oxygenated ent‐kaurane natural products, discuss these synthetic strategies in detail, and provide good guidance and reference for the synthesis of other C‐20 oxygenated compounds.