ERYTHROMYCINS AND PROCESS FOR THEIR PREPARATION

摘要

Erythromycins, particularly with C- 13 substituents R1 (e.g. C3-C6 cycloalk yl or cycloalkenyl groups) are prepared by fermenting suitable organisms in the presence of R1CO2H. A preferred organism is Saccharopolyspora erythraea preferably containing an integrated plasmid capable of directing synthesis of desired compounds.