Indium(III)-Catalyzed Addition of Diethyl Acetamidomalonate to Terminal Alkynes: An Efficient Approach to β-Branched α-Amino Acids
摘要:
The indium(III)-catalyzed Markovnikov addition of active methylene compounds to terminal alkynes has been expanded further to include diethyl acetamidomalonate. This reaction has been studied, and a practical approach to beta-branched a-amino acids was developed.
The invention relates to novel pyrrolidine derivatives of formula (I):
wherein R
1
, R
2
and R
3
are as defined herein, as inhibitors of glutaminyl cyclase (QC, EC 2.3.2.5). QC catalyzes the intramolecular cyclization of N-terminal glutamine residues into pyroglutamic acid (5-oxo-prolyl, pGlu*) under liberation of ammonia and the intramolecular cyclization of N-terminal glutamate residues into pyroglutamic acid under liberation of water.
[EN] HETEROCYLCIC DERIVATIVES AS INHIBITORS OF GLUTAMINYL CYCLASE<br/>[FR] DÉRIVÉS HÉTÉROCYCLIQUES EN TANT QU'INHIBITEURS DE GLUTAMINYLE CYCLASE
申请人:PROBIODRUG AG
公开号:WO2011029920A1
公开(公告)日:2011-03-17
The invention relates to novel pyrrolidine derivatives of formula (I), wherein R1, R2 and R3 are as defined herein, as inhibitors of glutaminyl cyclase (QC, EC 2.3.2.5). QC catalyzes the intramolecular cyclization of N-terminal glutamine residues into pyroglutamic acid (5-oxo-prolyl, pGlu*) under liberation of ammonia and the intramolecular cyclization of N-terminal glutamate residues into pyroglutamic acid under liberation of water.