Erthromycin A derivatives represented by the general formula ##STR1## wherein R.sup.1 is a group of the formula R.sup.7 CH.sub.2 -- (wherein R.sup.7 is a hydrogen group or a lower alkyl group) or a group of the formula R.sup.8 O-- (wherein R.sup.8 is a lower alkyl group), R.sup.2 is R.sup.8, a cycloalkyl group, a phenyl group or an aralkyl group.), or R.sup.2 and R.sup.7 together form an alkylene group, R.sup.3 is a hydrogen atom, a lower alkyl group, a phenyl group or an aralkyl group, or R.sup.3 and R.sup.7 together form an alkylene group, or R.sup.2 and R.sup.3 together form an alkylene group, R.sup.4 is a lower alkyl group, R.sup.5 is a substituted silyl group, and R.sup.6 is a hydrogen atom or R.sup.5, are disclosed. These compounds are useful as intermediates for the synthesis of antibacterial agents.
本发明公开了一种以一般式表示的
红霉素A衍
生物:##STR1## 其中R.sup.1是公式R.sup.7 CH.sub.2--(其中R.sup.7是氢原子或低碳基)或公式R.sup.8 O--(其中R.sup.8是低碳基)的基团,R.sup.2是R.sup.8、环烷基、苯基或芳基烷基),或R.sup.2和R.sup.7一起形成一个烷基链,R.sup.3是氢原子、低碳基、苯基或芳基烷基,或R.sup.3和R.sup.7一起形成一个烷基链,或R.sup.2和R.sup.3一起形成一个烷基链,R.sup.4是低碳基,R.sup.5是取代
硅基,R.sup.6是氢原子或R.sup.5。这些化合物可用作合成抗菌剂的中间体。