Total Synthesis of Clerodin
Abstract
Abstract The first and asymmetric total synthesis of clerodin, the earliest isolated clerodane diterpenoid, has been achieved by tail‐to‐head cyclization and modular synthetic strategies. The C19 oxidized trans ‐decalin core was constructed via a tail‐to‐head cyclization of an epoxide ene‐yne compound containing an internal oxygenated methyl‐bearing alkene. This process involved a titanium(III) catalyzed epoxide ring‐opening/ene‐yne cyclization. The furan fragment was assembled through a metallaphotoredox‐enabled deoxygenative coupling of an alcohol precursor. A SmI 2 ‐mediated elimination of a pre‐installed acetal established the 2,3‐dihydrofuran motif.
Article Details
Authors (6)
Qishuang Yin
State Key Laboratory of Natural Product Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou Gansu Province 730000 China
Yu Dang
State Key Laboratory of Natural Product Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou Gansu Province 730000 China
Siyuan Feng
Ze‐Qiang Zhang
State Key Laboratory of Natural Product Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou Gansu Province 730000 China
Yuanming Tu
State Key Laboratory of Natural Product Chemistry College of Chemistry and Chemical Engineering Lanzhou University 222 South Tianshui Road Lanzhou Gansu Province 730000 China
Ming Yang