HCID 67362260, compound → Gestodene

Participants

Reaction Steps

By treating 18-methyl-4,15-estradiene-3,17-dione (Formula III: Y=O, A-B=CH=CH) with lithium acetylide, gestodene is obtained in a high yield of about 75%. However, this method is usable only for amounts of starting material compounds up to 100 g; ethynylation in this manner therefore cannot be performed on an industrial scale. Moreover, it has been found that the 18-methyl-4,15-estradiene-3,17-dione starting material can have a sensitizing effect in case of skin contact, consequently protective measures must be observed when handling 18-methyl-4,15-estradiene-3,17-dione.

Provenance & Evidence