A catalytic method for the formation of amide bonds was developed in which the amidation of N-hydroxyimino esters with a broad range of amino acid tert-butyl esters is promoted by a niobium catalyst in the absence of solvent. Contrary to the predominant protocol based on reagent control commonly applied to amidation reactions, this study provides insight into an approach based on substrate control
[EN] BENZOTHIAZEPINE AND BENZOTHIADIAZEPINE DERIVATIVES WITH ILEAL BILE ACID TRANSPORT (IBAT) INHIBITORY ACTIVITY FOR THE TREATMENT HYPERLIPIDAEMIA<br/>[FR] DERIVES DE BENZOTHIAZEPINE ET DE BENZOTHIADIAZEPINE PRESENTANT UNE ACTIVITE INHIBITRICE DU TRANSPORT DES ACIDES BILIAIRES ILEAUX (IBAT), DESTINES AU TRAITEMENT DE L'HYPERLIPIDEMIE
申请人:ASTRAZENECA AB
公开号:WO2003022286A1
公开(公告)日:2003-03-20
The present invention relates to compounds of formula (I) wherein R?v, R1, R2, Rx, Ry, M, Rz, v, R3, R4, R5 and R6¿ are as defined within; pharmaceutically acceptable salts, solvates, solvates of such salts and prodrugs thereof and their use as ileal bile acid transport (IBAT) inhibitors for the treatment of hyperlipidaemia. Processes for their manufacture and pharmaceutical compositions containing them are also described.
Benzothiazepine and benzothiazepine derivatives with ileal bile acid transport (ibat) inhibitory activity for the treatment hyperlipidaemia
申请人:Starke Ingemar
公开号:US20050038009A1
公开(公告)日:2005-02-17
The present invention relates to compounds of formula (I) wherein R
v
, R
1
, R
2
, R
x
, R
y
, M, R
z
, v, R
3
, R
4
, R
5
and R
6
are as defined within; pharmaceutically acceptable salts, solvates, solvates of such salts and prodrugs thereof and their use as ileal bile acid transport (IBAT) inhibitors for the treatment of hyperlipidaemia. Processes for their manufacture and pharmaceutical compositions containing them are also described.
The invention provides methods of preparing macrocycles including macrocycle stabilized peptides (MSPs). Macrocycles and MSPs are prepared according to nucleophilic capture of an iminoquinomethide type intermediate generated from a suitably substituted 2-amino-thiazol-5-yl carbinol. The preferred nucleophile may be selected from an electron rich aromatic moiety in the case of macrocycles and, in the case of MSPs, at least one amino acid comprises an electron rich aromatic moiety. In addition, the concept can be extended to other related 5-membered heterocyclic systems in place of the thiazole, such as imidazole or oxazole. The conditions for the generation of the corresponding iminoquinomethide type intermediates may be similar or different than the conditions used for the 2-amino-thiazol-5-yl carbinol.
The invention provides methods of preparing macrocycles including macrocycle stabilized peptides (MSPs). Macrocycles and MSPs are prepared according to nucleophilic capture of an iminoquinomethide type intermediate generated from a suitably substituted 2-amino-thiazol-5-yl carbinol. The preferred nucleophile may be selected from an electron rich aromatic moiety in the case of macrocycles and, in the case of MSPs, at least one amino acid comprises an electron rich aromatic moiety. In addition, the concept can be extended to other related 5-membered heterocyclic systems in place of the thiazole, such as imidazole or oxazole. The conditions for the generation of the corresponding iminoquinomethide type intermediates may be similar or different than the conditions used for the 2-amino-thiazol-5-yl carbinol.