发明授权
US3926984A 7-{8 2-(2-Thioxo-4-thiazolin-3-yl)-acetamido{9 {0 cephalosporanic acid derivatives 失效
7- {8-(2-硫代-4-噻唑啉-3-基) - 乙酰氨基{9 {O-头孢烷酸衍生物

7-{8 2-(2-Thioxo-4-thiazolin-3-yl)-acetamido{9 {0 cephalosporanic acid derivatives
摘要:
The invention presents gram-positive and gram-negative antibacterial agents of the structural formula

IN WHICH R1 and R2 are independently -H or alkyl of 1 to 6 carbon atoms, and when taken together, R1 and R2 are trimethylene; R3 is -H, alkyl of 1 to 6 carbon atoms or methylthioethyl; N IS 0 OR 1, WITH THE PROVISO THAT WHEN N IS 1, R3 is -H; and A is a 7-amino-cephalosporin or 6-amino-penicillin moiety.
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