202062-95-1

Upstream product

• 104-95-0 (4-bromophenyl)thioanisole 
• 202062-89-3 3,20-bis-ethylenedioxy-13β-ethyl-17α-hydroxy-5α,10α-epoxy-18,19-dinorpregn-9(11)-ene 
• 202062-88-2 3,20-bis-ethylenedioxy-13β-ethyl-17α-hydroxy-18,19-dinorpregna-4,9-diene 
• 202062-85-9 (8S,13S,14S,17R)-13-Ethyl-17-ethynyl-17-nitrooxy-1,2,6,7,8,11,12,13,14,15,16,17-dodecahydro-cyclopenta[a]phenanthren-3-one 
• 202062-87-1 17α-hydroxy-13β-ethyl-18,19-dinorpregna-4,9-diene-3,20-dione 
• 797-63-7 levonorgestrel 
• 24881-79-6 13β-ethyl-17β-hydroxy-18,19-dinor-17α-pregna-4,9-dien-20-yn-3-one 
• 19914-67-1 13β-ethyl-17β-hydroxy-18,19-dinor-17α-pregn-5(10)-en-20-yn-3-one 
• 202062-86-0 17α-formyloxy-13β-ethyl-18,19-dinorpregna-4,9-diene-3,20-dione 

Downstream Products

• 202062-97-3 (8S,11R,13S,14S,17R)-17-Acetyl-13-ethyl-17-hydroxy-11-(4-methylsulfanyl-phenyl)-1,2,6,7,8,11,12,13,14,15,16,17-dodecahydro-cyclopenta[a]phenanthren-3-one 

Relevant academic research and scientific papers

11β-substituted 13β-ethyl gonane derivatives exhibit reversal of antiprogestational activity

The syntheses of three 17α-acetoxy-13β-ethyl-11β-aryl-18,19- dinorpregna-4,9-diene-3,20 diones from levonorgestrel are described. Despite their close structural similarity to the antiprogesterone CDB-2914, one of the compounds exhibits agonistic progestational activity, and the other two compounds are totally inactive.