Synthesis of Optically Active Amino Acid Derivatives via Dynamic Kinetic Resolution
作者:Yoon Kyung Choi、Yunwoong Kim、Kiwon Han、Jaiwook Park、Mahn-Joo Kim
DOI:10.1021/jo902034x
日期:2009.12.18
The complete conversion of racemic aminoacid amides to optically active aminoacid derivatives was accomplished via lipase/palladium-catalyzed dynamickineticresolution (DKR). In the DKR, a lipase catalyzes the selective acylation of l-substrate in the presence of acyl donor while unreacted d-substrate is isomerized by a Pd nanocatalyst to l-substrate. The DKR reactions provided good yields (80−98%)
The present invention relates to compounds of formula (I):
and to salts thereof, wherein R
1
, R
2
, R
c
, and R
d
have any of the values defined in the specification, and compositions and uses thereof. The compounds are useful as inhibitors of bromodomains. Also included are pharmaceutical compositions comprising a compound of formula (I) or a pharmaceutically acceptable salt thereof, and methods of using such compounds and salts in the treatment of various bromodomain-mediated disorders.
Hybrid Catalysis of 8-Quinolinecarboxaldehyde and Brønsted Acid for Efficient Racemization of α-Amino Amides and Its Application in Chemoenzymatic Dynamic Kinetic Resolution
The combination of 8-quinolinecarboxaldehyde and benzoic acid proved to be an effective catalyst system for the racemization of N-unprotected α-aryl- or α-alkyl-substituted α-amino amides. Application of this system to chemoenzymatic dynamic kineticresolution provided an efficient access to enantiomerically pure N-acetyl-α-amino amides in good to high yields.