| abstract |
7-Aminothiazolyl-oximino- acetamido-3-cephems of formula (I) and their salts and hydrates are new. - In formula (I) R1 = H or protecting gp.; R2, R3 = H, Me or opt. protected COOH; or R2 + R3 = O; R4, R5 = H; or R4 + R5 = O; R6 = H or protecting gp.; a, b, c = 0 or 1; the broken bond is an opt. double bond, and the wavy line indicates a bond to a syn- or anti-isomer; X = H, OH, 6,7-(COOMe)2-2-naphthyl, 3,4-(OH)2-1-naphthyl or a gp. of formula (II); where R7 = H, Cl, COOH, Me, iPr, OH, OMe or OCOMe; R8, R9 = H, Cl, Me, OH, OMe, OEt, OCOMe, OCOCH2Cl, butanoyloxy, methanesulphonyloxy, toluene-p-sulphonyloxy, NH2, MeCONH, PhCH2OCONH, NO2 or MeSO2; or R8 + R9 = OCH2CH2O or OCOO; R10 = H, OH, OCOMe, Me, OMe, NO2 or OCOCH2Cl; Z = C or N; d = 0 or 1; Y = halogen, OCOMe. |