Semisynthesis of (+)-angeloyl-gutierrezianolic acid methyl ester diterpenoid
摘要:
This paper describes the use of zamoranic acid in the first semisynthesis of the furolabdane (+)-angeloyl-gutierrezianolic acid methyl ester diterpenoid, which also establishes the absolute configuration of the natural product. Direct deconjugation of Delta(7) in zamoranic acid and Bestmann methodology for the furan ring synthesis are the key steps. (C) 2010 Published by Elsevier Ltd.
Several tri- and tetracyclicditerpenes have been synthesised from zamoranic acid. The key step is the cyclisation of a dicarbonyl 13,14-secoderivative by SmI2.
This paper describes the use of zamoranic acid in the first semisynthesis of the furolabdane (+)-angeloyl-gutierrezianolic acid methyl ester diterpenoid, which also establishes the absolute configuration of the natural product. Direct deconjugation of Delta(7) in zamoranic acid and Bestmann methodology for the furan ring synthesis are the key steps. (C) 2010 Published by Elsevier Ltd.