发明授权
US5047417A Butenoic or propenoic acid derivatives 失效
丁烯酸或丙烯酸衍生物

Butenoic or propenoic acid derivatives
摘要:
A butenoic or propenoic acid derivative having the following formula in which G is an aryl or a heterocyclic ring, R11 and R12 are hydrogen or an alkyl, X is sulfur or oxygen, R2 and R3 are hydrogen, an substituent such as an alkyl and J is pyridyl or phenyl having substituents and a heterocyclic ring may be formed between R2, R3 and J is provided here and is useful in the pharmacological field. ##STR1##
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