A compound of formula (I), or stereoisomers or pharmaceutically acceptable salts thereof,
or stereoisomers or pharmaceutically acceptable salts thereof,
wherein A, U1, U2, R1a, R1b, R2 and R3 have the meanings as indicated in the specification, are useful for treating conditions mediated by activation of the adenosine A2A receptor, especially inflammatory or obstructive airways diseases. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.
A compound of formula (I) or stereoisomers or pharmaceutically acceptable salts thereof, and their preparation and use as pharmaceuticals
wherein R
1
, R
2
and R
3
are as defined herein.
Synthesis of optically active β,γ-alkynylglycine derivatives
作者:Patrick Meffre、Laurence Gauzy、Eric Branquet、Philippe Durand、François Le Goffic
DOI:10.1016/0040-4020(96)00630-8
日期:1996.8
Full results on the first synthesis of opticallyactive β,γ-alkynylglycine derivatives from naturally occurring L-serine are described. The methodology uses L-serinal as a key intermediate and allows great versatility in the introduction of N-protective groups and of alkyne substitution. The N-Boc protected β,γ-alkynylglycine derivatives described have ee greater than 90%.
[EN] FUSED QUINAZOLINE DERIVATIVE, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF IN MEDICINE<br/>[FR] DÉRIVÉ DE QUINAZOLINE CONDENSÉ, SON PROCÉDÉ DE PRÉPARATION ET SON APPLICATION EN MÉDECINE<br/>[ZH] 稠合喹唑啉类衍生物、其制备方法及其在医药上的应用