| 摘要 |
<p>2-Aminobutyl-6-hydroxymethyl- 2-penem-3-carboxylic acid compounds of the formula <IMAGE> in which R1 represents an optionally substituted amino group, R2 represents hydroxy or a radical RA DIVIDED 2 that together with the carbonyl group -C(=0)-forms a protected carboxy group, and R3 represents an optionally protected hydroxy group, and their salts, their optical isomers and mixtures of these optical isomers exhibit antibiotic properties.</p> |
