139173-83-4

Upstream product

• 139173-82-3 3β-benzoyloxy-6β-acetoxy-5-methyl-19-nor-5β-pregna-9,16-dien-20-one 
• 106-99-0 buta-1,3-diene 

Downstream Products

• 139173-84-5 3β-benzoyloxy-6β-hydroxy-5-methyl-19-nor-16βH-cyclohexa<16,17>5β-pregna-4',9-dien-20-one 
• 139173-85-6 Benzoic acid (2S,6aS,6bS,10aR,11aS,11bS,13R,13aR)-6b-acetyl-6a,13a-dimethyl-13-phenoxythiocarbonyloxy-2,3,4,5,6,6a,6b,7,10,10a,11,11a,11b,12,13,13a-hexadecahydro-1H-indeno[2,1-a]phenanthren-2-yl ester 
• 139173-86-7 3β-benzoyloxy-5-methyl-19-nor-16βH-cyclohexa<16,17>5β-pregna-4',9-dien-20-one 

Relevant academic research and scientific papers

THE SYNTHESIS OF 5-METHYL-19-NOR-5β-PREGNA-9,16-DIENE-3,20-DIONE, 5-METHYL-19-NOR-5β-PREGNA-9,10-DIENE-3,6,20-TRIONE AND THEIR ANALOGUES WITH ANNELATED E RING

The synthesis of compounds VII, XVII, XXXIV and XXXVII is described, in which biological activity is assumed.The key steps of their preparation are the dehalogenation of compound XVIII and radicalic deoxygenation of the 6β-hydroxy group in compound XXX, w