A novel and efficient approach has been developed for the total synthesis of (+)-8-ethylnorlobelol (1) in a highly stereoselective manner. The key anti-1,3-aminoalcohol core is constructed through the reductive opening of 2-iodomethyl-4-amidotetrahydropyranyl ether which is prepared by a Prins/Ritter amidation sequence. (C) 2013 Elsevier Ltd. All rights reserved.
Stereoselective Synthesis of 2-(2-Hydroxyalkyl)piperidine Alkaloids Through Prins–Ritter Reaction
作者:B. V. Subba Reddy、Supriya Ghanty、N. Siva Senkar Reddy、Y. Jayasudhan Reddy、J. S. Yadav
DOI:10.1080/00397911.2013.869603
日期:2014.6.3
Abstract A stereoselective total synthesis of the 2-(2-hydroxyalkyl)piperidine alkaloids has been accomplished by a Prins–Ritter amidation sequence. Other steps involved in this synthesis are Jacobsen's hydrolytic kinetic resolution (HRK) and ring-closing metathesis (RCM). GRAPHICAL ABSTRACT