发明授权
US4479942A Tetrahydrofurnancarboxylic acid derivatives, processes for preparation thereof and pharmaceutical compositions thereof 失效
四氢呋喃羧酸衍生物,其制备方法及其药物组合物

Tetrahydrofurnancarboxylic acid derivatives, processes for preparation
thereof and pharmaceutical compositions thereof
摘要:
This invention relates to tetrahydrofuran-carboxylic acid derivatives, of antimicrobial activity, of the formula: ##STR1## wherein R.sup.1 is amino or a protected amino group,R.sup.2 is amino or acylamino andR.sup.3 is carboxy or a protected carboxy groupor a pharmaceutically acceptable salt thereof.
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