Abstract:
8,9-Anhydroerythronolide B 6,9-hemiketal and 8hydroxyerythronolide B are respectively successive intermediates for the preparation of 3-mycarosyl-8-hydroxyerythronolide B which is useful as an antipyretic.
Abstract translation:8,9-水解的十六氢化ide ide ide B ide ide al al al al al ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide ide
Abstract:
The 8,9-anhydro-8,9-epoxyerythromycin 6,9-hemiketal, the 8,9seco-8-oxoerythromycin-9-oic acid 6,9-lactone, and the 8hydroxyerythromycin derivatives of both erythromycin A and B have antimicrobial activity, and the N-oxide intermediates thereof.
Abstract:
A new synthetic route is described that leads to TRH in excellent yield; it uses a new precursor, benzyloxycarbonyl-L(O5-methyl)glutamyl-L-histidyl-L-prolinamide. This substance can be made in a three-step process providing good yields. The new precursor can be converted to TRH by simple hydrogenolysis and cyclization. These two steps can be run without isolation of the intermediate L-(O5-methyl)glutamyl-L-histidyl-L-prolinamide.