The present invention is related to the use of pyrrolidine esters of formula (I) for the treatment and/or prevention of premature labor, premature birth and dysmenorrhea. In particular, the present invention is related to the use of pyrrolidine esters of formula (I) to modulate, notably to antagonise the oxytocin receptor. The present invention is furthermore related to novel pyrrolidine esters. X is selected from the group consisting of CR
6
R
7
, NOR
6
, NNR
6
R
7
;R is selected from the group comprising or consisting of C
1
-C
6
alkyl, C
2
-C
6
alkenyl, C
2
-C
6
alkynyl, saturated or unsaturated 3-8-membered cycloalkyl which may contain 1 to 3 heteroatoms selected of N, O, S, aryl, heteroaryl, C
1
-C
6
-alkyl aryl, C
1
-C
6
-alkyl heteroaryl. R
1
is selected from the group comprising or consisting of C
1
-C
6
-alkyl, C
2
-C
6
-alkenyl, C
2
-C
6
-alkynyl, aryl, heteroaryl, 3-8-membered cycloalkyl, acyl, C
1
-C
6
-alkyl aryl, C
1
-C
6
-alkyl heteroaryl, said cycloalkyl or aryl or heteroaryl groups may be fused with 1-2 further cycloalkyl or aryl or heteroaryl group.
1
本发明涉及使用式(I)的
吡咯烷
酯治疗和/或预防早产、早产和痛经。特别是,本发明涉及使用式(I)的
吡咯烷
酯来调节,尤其是拮抗
催产素受体。本发明还涉及新型
吡咯烷
酯。其中,X选自CR6R7、NOR6、NNR6R7组成的群;R选自C1-C6烷基、C2-C6
烯基、C2-C6炔基、饱和或不饱和的含1到3个N、O、S杂原子的3-8环
脂肪环烷基、芳基、杂环芳基、C1-C6烷基芳基、C1-C6烷基杂环芳基组成的群;R1选自C1-C6烷基、C2-C6
烯基、C2-C6炔基、芳基、杂环芳基、3-8环
脂肪环烷基、酰基、C1-C6烷基芳基、C1-C6烷基杂环芳基,所述
环烷基或芳基或杂环芳基基团可以与1-2个进一步的
环烷基或芳基或杂环芳基基团融合。