69901-85-5Relevant articles and documents
Asymmetric hydrogenation of N-sulfonylated-α-dehydroamino acids: Toward the synthesis of an anthrax lethal factor inhibitor
Shultz, C. Scott,Dreher, Spencer D.,Ikemoto, Norihiro,Williams, J. Michael,Grabowski, Edward J. J.,Krska, Shane W.,Sun, Yongkui,Dormer, Peter G.,DiMichele, Lisa
, p. 3405 - 3408 (2007/10/03)
(Chemical Equation Presented) A novel and highly enantioselective Ru-catalyzed hydrogenation of N-sulfonylated-α-dehydroamino acids has been discovered and demonstrated in the synthesis of an anthrax lethal factor inhibitor (LFI). Herein, this methodology is used to prepare N-sulfonylated amino acids in up to 98% ee. This unprecedented hydrogenation uses a chiral Ru catalyst rather than Rh as typical for acylated dehydroamino acids and esters, and this work reports the first asymmetric hydrogenation of a tetrasubstituted dehydroamino acid derivative using a Ru catalyst.
ENANTIOSPECIFIC SYNTHESIS OF A RIGID, C2 SYMMETRIC, CHIRAL GUANIDINE BY A NEW AND DIRECT METHOD
Corey, E. J.,Ohtani, Mitsuaki
, p. 5227 - 5230 (2007/10/02)
A broadly applicable method has been demonstrated for the efficient synthesis of chiral bicyclic guanidines such as 1 from chiral α-amino acids.