New melatonergic agents are phenyl alkanyl or phenyl alkyl substituted carboxamides and ureas of Formula I: ##STR1## wherein: R.sub.1 =C.sub.1-3 alkyl, allyl, C.sub.3-6 cycloalkyl substituted C.sub.1-4 alkyl; R.sub.2 =hydrogen, halogen or C.sub.1-4 alkoxy; R.sub.3 =hydrogen or C.sub.1-4 alkyl; R.sub.4 =C.sub.1-4 alkyl, C.sub.1-4 alkyl substituted amino, carboxylic acid substituted C.sub.1-4 alkyl or C.sub.3-6 cycloalkyl, C.sub.3-6 cycloalkyl, or straight or branched chain C.sub.2-4 alkenyl; A=a linear C.sub.2-4 alkanediyl or alkenediyl chain, provided that A not be --CH.sub.2 CH.sub.2 -- when X is a bond; and X=a covalent bond or oxygen.
新的
褪黑素类药物是公式I中的
苯基烷基或
苯基烷基取代的羧
酰胺和
脲类化合物:##
STR1##
其中:R.sub.1 = C.sub.1-3烷基,
烯丙基,C.sub.3-6
环烷基取代的C.sub.1-4烷基; R.sub.2 =
氢,卤素或C.sub.1-4烷
氧基; R.sub.3 =
氢或C.sub.1-4烷基; R.sub.4 = C.sub.1-4烷基,C.sub.1-4烷基取代的
氨基,羧基取代的C.sub.1-4烷基或C.sub.3-6
环烷基,C.sub.3-6
环烷基,或直链或支链C.sub.2-4
烯基; A = 线性C.sub.2-4烷二基或
烯二基链,但当X是
化学键时,A不能为--CH.sub.2 CH.sub.2--; X =
化学键或
氧。