[(Thioalkyl)thioacetyl]cephalosporin derivatives of the formula ##STR1## wherein R is hydrogen, lower alkyl, phenyl-lower alkyl, tri(lower alkyl)silyl, a salt forming ion, or the group ##STR2## R.sub.1 is hydrogen, lower alkyl, phenyl, thienyl or furyl; R.sub.2 and R.sub.6 each is hydrogen or lower alkyl; R.sub.3 and R.sub.5 each is lower alkyl, phenyl or phenyl-lower alkyl and R.sub.4 is hydrogen, hydroxy or lower alkanoyloxy; are useful as antimicrobial agents.
巯基)巯基乙酰基)
头孢菌素衍
生物的
化学式为##STR1##其中R为氢、低烷基、苯基-低烷基、三(低烷基)
硅基、盐形成离子,或者是##STR2##R1为氢、低烷基、苯基、
噻吩基或
呋喃基;R2和R6各自为氢或低烷基;R3和R5各自为低烷基、苯基或苯基-低烷基,R4为氢、羟基或低烷酰氧基;这些化合物可用作抗微
生物剂。