Asymmetric Synthesis of 2-Alkyl-3-phosphonopropanoic Acids via P−C Bond Formation and Hydrogenation
作者:Pallavi A. Badkar、Nigam P. Rath、Christopher D. Spilling
DOI:10.1021/ol701500s
日期:2007.8.1
Allylic acetates, formed by the acetylation of Baylis Hillman adducts, undergo addition of phosphorus nucleophiles to give stereoselectively the Z-unsaturated esters. TFA cleavage of the tert-butyl ester and asymmetric hydrogenation of the unsaturated acid yields the phosphono alkyl propanoic acid moiety, commonly found in phosphonate- and phosphinate-based enzyme inhibitors.
作者:Brand, Maja、Drewes, Siegfried E.、Loizou, Georgia、Roos, Gregory H. P.
DOI:——
日期:——
BRAND, MAJA;DREWES, SIEGFRIED E.;LOIZOU, GEORGIA;ROOS, GREGORY H. P., SYNTH. COMMUN., 17,(1987) N 7, 795-802
作者:BRAND, MAJA、DREWES, SIEGFRIED E.、LOIZOU, GEORGIA、ROOS, GREGORY H. P.
DOI:——
日期:——
Synthesis and Modeling of Ezetimibe Analogues
作者:Mateo M. Salgado、Alejandro Manchado、Carlos T. Nieto、David Díez、Narciso M. Garrido
DOI:10.3390/molecules26113107
日期:——
levels by reducing its absorption in the small intestine when joining to Niemann-Pick C1-like protein (NPC1L1). A ligand-based study on ezetimibe analogues is reported, together with one-hit synthesis, highlighted in the study. A convenient asymmetric synthesis of (2S,3S)-N-α-(R)-methylbenzyl-3-methoxycarbonylethyl-4-methoxyphenyl β-lactam is described starting from Baylis–Hillman adducts. The route involves
A novel bifunctionalchiral pyridoxal derivative 1 with a bigger catalytic cavity than that of previous pyridoxal catalysts promoted direct asymmetric α-C allylation of NH2-unprotected glycinates with Morita–Baylis–Hillmanacetates. In this way, the chemoselectivity for glycinates was switched from intrinsic N-allylation to α-C allylation to produce chiral glutamic acid esters with excellent stereoselectivity