(8S,11R,13S,14S,17S)-17-hydroxy-11-[4-((RS)-1-hydroxyethyl)phenyl]-1 3-methyl-17-pentafluoroethyl-1,2,6,7,8,11,12,13,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one → (8S,11R,13S,14S,17S)-17-hydroxy-13-methyl-11-{4-[(RS)-1-(2-methylbenzothiazol-5-ylmethoxy)ethyl]phenyl}-17-pentafluoroethyl-1,2,6,7,8,11,12,13,14,15,16,17-dodecahydro-cyclopenta[a]phenanthren-3-one

Participants

Reaction Steps

In analogy to Example 2, 500 mg (0.98 mmol) of (8S,11R,13S,14S,17S)-17-hydroxy-11-[4-((RS)-1-hydroxyethyl)phenyl]-13-methyl-17-pentafluoroethyl-1,2,6,7,8,11,12,13,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one were converted using 5-bromomethyl-2-methylbenzothiazole and, after workup and purification, 157 mg (24%) of the title compound were isolated as a colourless foam.

Provenance & Evidence