| 摘要 |
β-Lactam antibiotic deriv., e.g. I, cephalosporin (R = H, OH ; R1= H, alkali metal, etc. ; Het= triazol, etc.), was prepd. by reaction of cephalosporin deriv. II (A = (CH2)n, arylen ; B = H, OCOCH3, halogen ; R, R' given) with thio compounds III( M = H, alkali metal ; Het given) and then hydrolysis of IV (R, R1, Het, A given).
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