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Asymmetric Total Syntheses of Communesin F and a Putative Member of the Communesin Family
Author(s) -
Park Jisook,
Jean Alexandre,
Chen David Y.K.
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201707806
Subject(s) - aminal , oxindole , chemistry , total synthesis , stereochemistry , enantioselective synthesis , family member , catalysis , combinatorial chemistry , organic chemistry , medicine , family medicine
Here we report asymmetric total syntheses of communesin F and a putative member of the communesin family of bis‐aminal alkaloid natural products. The successful strategy featured the invention of an asymmetric organocatalytic reaction to unify two oxindole subunits, a Ti(O i Pr) 4 ‐mediated dehydrative skeletal rearrangement, and a late‐stage Pd(OAc) 2 ‐catalyzed directed CH‐alkenylation reaction. Collectively, the synthetic technologies disclosed herein enabled the preparation of a late‐stage polycyclic intermediate catered for the synthesis of both naturally occurring and designed communesins. More importantly, speculated and yet to be discovered member(s) of the communesin family can now be accessed to facilitate a better understanding of the communesin biosynthetic network.