Novel and chiral hantzsch-type 1,4-dihydropyridines having A p-tolylsulfinyl group. Synthesis and biological activities as calcium channel antagonists.
Novel and chiral hantzsch-type 1,4-dihydropyridines having A p-tolylsulfinyl group. Synthesis and biological activities as calcium channel antagonists.
Studies on novel and chiral 1,4-dihydropyridines. V. Hantzsch-type 1,4-dihydropyridines having a chiral sulfinyl group: Syntheses, structures, and biological activity as a calcium channel antagonist
4-Aryl and 4-methyl substituted Hantzsch-type 1,4-dihydropyridines having a chiral solfinyl group as an electron-withdrawing group were successfully synthesized in an optically active form from beta-ketosulfoxides via two routes. The relationship between calcium channel antagonist activity and the structures of 4-aryl derivatives was also studied. (C) 1997 Elsevier Science Ltd.
Highly stereoselective Luche reduction of α-enonesulfoxides to 2-sulfinyl allylic alcohols
Luche reduction of alpha-enonesulfoxides with NaBH4 in methanol in the presence of YbCl3 afforded 2-sulfinyl allylic high yields and with excellent diastereoselectivity. (c) 2007 Elsevier Ltd. All rights reserved.