Takeda Pharmaceutical Company Limited
1,2-substituted cyclopentanes as orexin receptor antagonists

Abstract:

The present invention provides compounds of formula (I) and pharmaceutically acceptable salts thereof, ##STR00001## wherein L, X, R.sup.a, R.sup.b, R.sup.1, R.sup.2 and R.sup.3 are as defined in the specification, processes for their preparation, pharmaceutical compositions containing them and their use in therapy.