NOVEL DERIVATIVES OF 5-0-DESOSAMINYL 6-0-METHYL- ERYTHRONOLIDE A, THEIR PREPARATION PROCESS AND THEIR APPLICATION TO THE PREPARATION OF BIOLOGICALLY ACTIVE PRODUCTS

摘要

Compounds of formula (I), wherein OR1, OR2 and OR3 are hydroxyl radicals protected so as to form easily cleavable radicals, are useful for preparing antibiotic products.