EP1575969A1 - SUBSTITUTED 9A-N-{N - 4-(SULFONYL)PHENYL CARB AMOYL} DERIVATIVES OF 9-DEOXO-9-DIHYDRO-9A-AZA-9A-HOMOERITHROMYCIN A AND 5-0-DESOSAMINYL--9-DEOXO-9-DI-HYDRO-9A-AZA-9A-HO MOERITHRONOLIDE A