Zobrazeno 1 - 10
of 11
pro vyhledávání: '"M. Luz Quiroga"'
Publikováno v:
Tetrahedron. 55:7319-7330
The synthesis of (Z)-γ-substituted-α,β-didehydroglutamates has been accomplished either starting from the glycinates 1 or the α,β-didehydroglutamates 6. In the first case, no reaction of the lithium enolates 3 was observed, and the use of the na
Publikováno v:
Tetrahedron. 53:2189-2198
Chemoselective reduction of the carbonyl group in α-acyl-N-[Bis(methylthio)methylene]-alaninates 1a-c and phenylalaninates 1d,e allowed for the diastereoselective synthesis of both the syn and the anti isomers of the corresponding N-protected α,α-
Publikováno v:
The Journal of Organic Chemistry. 60:7934-7940
Publikováno v:
The Journal of Organic Chemistry. 60:6700-6705
Publikováno v:
ChemInform. 30
Publikováno v:
The Journal of organic chemistry. 62(3)
Sm(III)-azomethine ylides 2 have been generated from ketones 1. Cycloaddition of ylides 2 with alpha,beta-unsaturated esters 3 through a transition state chelation-controlled by the metal allowed for the asymmetric synthesis of gamma-carboxypyrogluta
Autor:
M Jesús de la Morena, Carlos Alvarez-Ibarra, M. Luz Quiroga, Elena Martín Ortega, Aurelio G. Csaky
Publikováno v:
Tetrahedron Letters. 38:4501-4502
The addition of either the alkaline enolates of the glycinates 1 or their naked enolates to electron defficient alkynes allows for the synthesis of substituted ( Z )- α , β -didehydroglutamic acid derivatives 7 via a Michael addition /1,3-prototrop
Publikováno v:
Tetrahedron Letters. 37:6573-6574
Sm(III)-Azomethine ylides were generated by fragmentation of the iminodithiocarbonates 1 with SmI2 in THF. 1,3-Dipolar cycloaddition of these species with α,β-unsaturated esters 3 afforded the highly functionalized 2-methylthio-Δ1-pyrrolines 4 wit
Publikováno v:
The Journal of Organic Chemistry. 61:2250-2250
Publikováno v:
The Journal of Organic Chemistry. 61:2250-2250