Enantioselective Synthesis of 10-epi-Anamarine via an Iterative Dihydroxylation Sequence
摘要:
The enantioselective syntheses of 10-epi-anamarine and 5,10-epi,epi-anamarine have been achieved in 13 to 14 steps. The route relies upon an enantio- and regioselective Sharpless dihydroxylation of either dienoates or trienoates to establish the C-8 to C-11 stereochemistry. A diastereoselective Leighton allylation established the desired C-5 stereochemistry. The route also relies upon a ring-closing metathesis to establish the alpha,beta-unsaturated lactones.
De Novo Asymmetric Synthesis of Anamarine and Its Analogues
摘要:
The enantioselective synthesis of anamarine has been achieved in 21 steps. The route relies on enantio- and regioselective Sharpless dihydroxylation of dienoate ester and zinc borohydride reduction to establish the C-8-C-11 stereochemistry. A diastereoselective Leighton allylation established the desired C-5 stereochemistry. The route has also been used to prepare two diastereoisomers of anamarine in 14 steps.
De Novo Asymmetric Synthesis of Anamarine and Its Analogues
作者:Dong Gao、George A. O'Doherty
DOI:10.1021/jo051681p
日期:2005.11.1
The enantioselective synthesis of anamarine has been achieved in 21 steps. The route relies on enantio- and regioselective Sharpless dihydroxylation of dienoate ester and zinc borohydride reduction to establish the C-8-C-11 stereochemistry. A diastereoselective Leighton allylation established the desired C-5 stereochemistry. The route has also been used to prepare two diastereoisomers of anamarine in 14 steps.
Enantioselective Synthesis of 10-<i>e</i><i>pi</i>-Anamarine via an Iterative Dihydroxylation Sequence
作者:Dong Gao、George A. O'Doherty
DOI:10.1021/ol047322i
日期:2005.3.1
The enantioselective syntheses of 10-epi-anamarine and 5,10-epi,epi-anamarine have been achieved in 13 to 14 steps. The route relies upon an enantio- and regioselective Sharpless dihydroxylation of either dienoates or trienoates to establish the C-8 to C-11 stereochemistry. A diastereoselective Leighton allylation established the desired C-5 stereochemistry. The route also relies upon a ring-closing metathesis to establish the alpha,beta-unsaturated lactones.