Toward a total synthesis of an aglycone of spiramycin; installation of the hydroxy groups at C-4 and C-5: A model study

Article abstract of DOI:10.1016/S0040-4039(97)10760-2

The stereochemical course of the osmium-mediated bis-hydroxylation of the allylic derivative 6c, whose the structure is closely related to that of a C-1/C-7 fragment of the title aglycone, has been established unambiguously by X-ray analysis of a carboxylic[ic acid derived from one of the two diastereomeric diols which formed.