Water → HCID 22800265, compound

Participants

Reaction Steps

To a solution of 3β,17β-diacetoxy-19-hydroxyandrost-5-ene (14.4g) in pyridine (370ml) at 25° is added p-toluenesulfonyl chloride (38.1g) and the solution is left at 25° for 4 days. Water is then added, and the mixture is extracted with ethyl acetate, and the organic extract is washed successively with water, 5% aqueous hydrochloric acid, 5% aqueous sodium bicarbonate and water, and then dried (Na2SO4) and evaporated in vacuo. The residue is crystallized from methylene chloride-hexane to give the compound of this Example (11), mp. 135°-137°; mass spectrum m/e 484, 372, 312.

Provenance & Evidence