The present invention relates to compounds of the formula (I): (wherein variable groups 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.
1
Straightforward Synthesis of Depsiphosphonopeptides via Mannich-Type Multicomponent Condensation
作者:Jiaxi Xu、Yuanhe Gao
DOI:10.1055/s-2006-926324
日期:——
A straightforward method for the synthesis of depsiphosphonopeptides via a Mannich-type multicomponent condensation of simple starting materials, such as benzyl carbamate, aldehydes, and 1-carbethoxyalkyl phosphorodichloridites, was developed. Compared to previous methods, our strategy provides a more efficient, convenient, and practical route for the preparation of depsiphosphonopeptides under mild reaction conditions with good yields. Such a strategy avoids the initial synthesis of 1-aminoalkylphosphonic acid or 1-aminoalkylphosphonous acid derivatives as starting materials.
A new synthesis of chiral α- and β-aminophosphonic acids is described which involves a highly diastereoselective addition of phosphite and phosphonate anions to enantiopure sulfinimines.
Stereoselective Addition of Dimethyl Thiophosphite to Imines
作者:Pakamas Tongcharoensirikul、Alirica I. Suarez、Troy Voelker、Charles M. Thompson
DOI:10.1021/jo035707t
日期:2004.4.1
benzaldimine derived from threonine methyl ester and alanine methyl ester were far less diastereoselective, affording 38:62 and 61:39 ratios, respectively. Addition of DMTP to the benzaldimine derived from (R)-α-methylbenzylamine (78:22) and (S)-serine methyl ester (73:27) were intermediate in selectivity. DMTP addition to the imines formed between serine methyl ester and acetaldehyde and isobutyraldehyde
Nucleophilic additions toN-glycosylnitrones part IV Asymmetric synthesis ofN-hydroxy-?-aminophosphonic and ?-aminophosphonic acids
作者:Rolf Huber、Andrea Vasella
DOI:10.1002/hlca.19870700603
日期:1987.9.23
proved inert towards the phosphite anions, they reacted with P(OSiMe3)3 under catalysis by Lewis acids. Thus, P(OSiMe3)3 reacted with the crystalline (Z)-N-glycosylnitrones 2 and 8 to give the optically active N-hydroxy-α-aminophosphonic acids 4 and 10, respectively, and hence the α-aminophosphonicacids 5 and 11 in yields up to 92% and with an enantiomeric excess (e.e.) up to 97% (Scheme 1). The absolute