Divergent reactivity of sulfoxonium ylide with allyl carbonate and allyl carbamate.

A divergent reactivity of sulfoxonium ylide with allyl carbonates and allyl carbamates is demonstrated. Rh(III)-catalyzed C-H activation and cyclization of sulfoxonium ylide with ally esters leads to the formation of a cyclopropane-fused tetralone derivative by cascade C-H activation, (4+2) annulation, and cyclopropanation. A similar reaction of sulfoxonium ylide with allyl carbamates forms a C3-substituted indanone derivative a rare and interesting domino C-H activation and (4+1) annulation in which allyl carbamate is acting as a C1-synthon.

Isoxazole-tethered diarylheptanoid analogs: Discovery of a new drug-like PAR2 antagonist.

A new class of isoxazole-tethered diarylheptanoids having characteristic 1,3-syn-diol and 1,3-anti-diol chemophoric moieties, e.g. 4a-d and 5a-c respectively, have been designed and synthesized starting from d-glucose following a stereo-conserved general synthetic strategy.