The present invention relates to a compound represented by the following general formula (1) ##STR1## (wherein X represents O, S, SO, SO.sub.2, or NH, Y is a substituted or unsubstituted hydrocarbon residue containing 1 through 6 carbon atoms and having an overall molecular weight of not less than 15 and not more than 400, and the hydrocarbon residue, when the residue is ring, may contain one or two hetero-atoms in the ring, and Z is a carboxyl group, a group derived therefrom or an aliphatic hydrocarbon residue having from 1 to 4 carbon atoms which may be substituted or unsabstituted) or a pharmacologically acceptable salt thereof (excluding (1R,2S)-2-[(2R)-(2-acetyl-amino-2-carboxyethyl)thiomethyl]-3-oxo-1-cyclope ntane-carboxylic acid (cystacyclin)), a method for production thereof and a medicinal use thereof. The compound of the present invention is useful as a neuron differentiation accelerator.
本发明涉及以下通式(1)所表示的化合物
##STR1##
(其中X代表O,S,SO,SO.sub.2或NH,Y是含有1至6个碳原子的取代或未取代的烃基残基,并具有不少于15且不超过400的分子量,当残基为环时,该残基可能在环中含有一个或两个杂原子,而Z是羧基,由此衍生的基团或具有1至4个碳原子的脂肪烃基残基,可以是取代或未取代的),或其药学上可接受的盐(不包括(1R,2S)-2- [(2R) -(2-乙酰
氨基-2-羧乙基)
硫甲基] -3-氧代-1-
环己烷-
羧酸(环状素)),以及其制备方法和药用。本发明的化合物在神经元分化加速剂方面非常有用。