Sirolimus → 1,2,3,4-Tetrahydrorapamycin

Participants

Reaction Steps

A solution of 1 g (1.1 mmol) of rapamycin and 325 mg (351 μmol) of tris(triphenylphosphine) rhodium (I) chloride in 82 mL of benzene was hydrogenated at 50 psi for 4 days. The reaction was concentrated in vacuo affording a red foam. HPLC chromatography on a 2 inch HPLC column with 80% ethyl acetate/hexane as the eluant afforded 100 mg (10%) of 1,2,3,4-tetrahydrorapamycin as a white foam.

Provenance & Evidence