1174637-69-4Relevant articles and documents
Chiral cyclic zwitterionic bipyridinium-4-olates for the diastereoselective synthesis of (R,S)- A nd (S,R)-trozamicol
López-González, Ricardo,Zárate, Araceli,Aparicio, David M.,Mendoza, Angel,Gnecco, Dino,Juárez, Jorge R.,Romero-Ceronio, Nancy,Orea, Laura,Terán, Joel L.
, p. 1683 - 1686 (2016/04/04)
A series of new chiral enantiopure cyclic zwitterionic bipyridinium-4-olates compounds were prepared in four steps starting from the corresponding primary chiral amine. With these intermediates, a convenient methodology has been developed for the synthesis of cis-3-piperidinyl-4-hydroxypiperidines. Specifically, the utility of this chiral zwitterionic type intermediate has been demonstrated by the synthesis of (R,S)- A nd (S,R)-trozamicol.
New cyclic zwitterionic building blocks for the synthesis of piperidine-2,4-dione and pyridine-2-one compounds
Palillero, Angel,Terán, Joel L.,Gnecco, Dino,Juárez, Jorge R.,Orea, María L.,Castro, Alejandro
scheme or table, p. 4208 - 4211 (2009/10/11)
In this Letter we describe the synthesis of new chiral cyclic zwitterionic pyridin-2-one compounds 5a,b via an intramolecular ring-closure reaction of a stabilize amide sulfur ylide 4a,b derived from (R)-(-)-2-phenylglycinol and (R)-(+)-phenylethylamine i