940932-51-4

Upstream product

• 940932-58-1 11β-(3,4-difluorophenyl)-3,3-[1,2-ethanediylbis(oxy)]-17α-ethynyl-5α-hydroxy-17β-[(1-oxopropyl)amino]estr-9-ene 
• 5571-36-8 ethylene deltenone 
• 39931-88-9 (5'R,10'R,13'S)-13'-methyl-1',2',6',7',8',12',13',14',15',16'-decahydro-17'H-spiro[1,3-dioxolane-2,3'-[5,10]epoxycyclopenta[a]phenanthren]-17'-one 
• 940932-54-7 11β-(3,4-difluorophenyl)-3,3-[1,2-ethanediylbis(oxy)]-5α-hydroxy-17β-nitroestr-9-ene 
• 940932-53-6 11β-(3,4-difluorophenyl)-3,3-[1,2-ethanediylbis(oxy)]-5α-hydroxy-17-(N-hydroxyimino)estr-9-ene 
• 940932-52-5 11β-(3,4-difluorophenyl)-3,3-[1,2-ethanediylbis(oxy)]-5α-hydroxyestr-9-en-17-one 
• 940932-57-0 17β-amino-11β-(3,4-difluorophenyl)-3,3-[1,2-ethanediylbis(oxy)]-17α-ethynyl-5α-hydroxyestr-9-ene 
• 940932-56-9 11β-(3,4-difluorophenyl)-3,3-[1,2-ethanediylbis(oxy)]-17α-ethynyl-5α-hydroxy-17β-(N-hydroxylamino)estr-9-ene 
• 940932-55-8 11β-(3,4-difluorophenyl)-3,3-[1,2-ethanediylbis(oxy)]-17α-ethynyl-5α-hydroxy-17β-nitroestr-9-ene 

Relevant academic research and scientific papers

Copper-catalyzed cyclization of steroidal acylaminoacetylenes: Syntheses of novel 11β-Aryl-17,17-spiro[(4′H,5′-methylene)oxazol]- substituted steroids

A variety of novel 11β-aryl-17,17-spiro[(4′H,5′-methylene) oxazol]-substituted steroids have been synthesized in moderate to good yields via copper-catalyzed cyclization of acylaminoacetylenes. The best result was obtained with a catalytic amount of Cul i