Cortisol → Cortienic acid

Participants

Reaction Steps

In a 1000 mL round-bottomed flask was suspended (8S,9S,10R,11S,13S,14S,17R)-11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3(2H)-one (10.4 g, 28.69 mmol) in MeOH (200 mL) and a solution of orthoperiodic acid (9.81 g, 43.04 mmol) in water (200 mL) was added to give a colorless solution. The mixture was stirred for 45 minutes after which an additional 3 g of orthoperiodic acid was added and stirring was continued for another hour. MeOH was removed in vacuo and the residual aqueous mixture was diluted with 200 ml of water. The resulting solid was isolated by filtration and was air-dried on the sinter to yield 8.1 g of the desired compound as a white solid. APCI-MS m/z: 349 [MH+].

Provenance & Evidence