A convergent total synthesis of a new antiepileptic ceramide and its triacetyl derivative using olefin cross metathesis

‘Chiron’ approach to stereoselective synthesis of sphinganine and unnatural safingol, an antineoplastic and antipsoriatic agent

Highly stereoselective total syntheses of sphinganine 1 and antineoplastic and antipsoriatic drug safingol 17 have been demonstrated.

Glycal approach to the synthesis of macrolide (−)-A26771B

A convergent synthesis of macrolide natural product (−)-A26771B starting from d-glucal is reported. Key features of this synthesis involve Ferrier rearrangement, cross metathesis of chiral fragments 3 and 4 and Yamaguchi macrolactonization.

Substrate and stereocontrolled iodocycloetherification of highly functionalized enantiomerically pure allylic alcohols: application to synthesis of cytotoxic 2-epi jaspine B and its biological evaluation

A mechanistic study on iodocycloetherification of enantiopure allylic alcohols is established. Its application to synthesis of marine cytotoxic 2-epi jaspine B has been demonstrated.

A chiron approach to aminocytitols by Petasis-Borono-Mannich reaction: formal synthesis of (+)-conduramine E and (-)-conduramine E

A chiron approach to a stereoselective route for the synthesis of aminocytitols from carbohydrates is described. The formal synthesis of (+)-conduramine E and (-)-conduramine E was achieved by utilizing this strategy. The key features of the synthetic strategy include one-pot three-component Petasis-Borono-Mannich reaction to introduce the syn-β-amino alcohol functionality of conduramine E and ring-closing metathesis to construct its carbocyclic core. The present synthetic approach paves the way for stereoselective synthesis of several conduramines starting from carbohydrates.