35085-41-7

Upstream product

• 29371-39-9 C₂₃H₃₆O₅ 
• 23855-42-7 (5R,8R,9S,10R,13S,14S)-13-Ethyl-5-hydroxy-3-methyl-tetradecahydro-4-oxa-cyclopenta[a]phenanthren-17-one 
• 23759-68-4 (3aS,5aS,6R,9aR,9bS)-3a-Ethyl-6-(3-oxo-butyl)-decahydro-cyclopenta[a]naphthalene-3,7-dione 

Downstream Products

• 797-63-7 norgestrel 

Relevant academic research and scientific papers

Synthesis of 13-alkyl-gon-4-ones

The preparation of 13-methylgon-4-enes and novel 13-polycarbonalkylgon-4-enes by a new total synthesis is described. 13-Alkylgon-4-enes having progestational, anabolic and androgenic activities are prepared by forming a tetracylic gonane structure unsaturated in the 1,3,5(10),9(11) and 14-positions, selectively reducing in the B- and C-rings, and converting the aromatic A-ring compounds so-produced to gon-4-enes by Birch reduction and hydrolysis.