106401-64-3

Upstream product

• 106350-94-1 (4S,6S)-4-Ethyl-6-[(S)-1-((1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl)-ethyl]-tetrahydro-pyran-2-one 
• 106350-93-0 (22S)-6β-methoxy-27-nor-3α,5-cyclo-5α-stigmast-24-en-26,22-lactone 
• 106350-86-1 (2S,3S)-1-(2-Ethyl-[1,3]dithian-2-yl)-3-((1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl)-butan-2-ol 
• 106350-89-4 (22S)-22-hydroxy-6β-methoxy-27-nor-3α,5-cyclo-5α-cholestan-24-one 
• 54604-91-0 2-[(S)-1-((1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-Methoxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl)-ethyl]-oxirane 
• 54604-87-4 6β-methoxy-3α,5-cyclo-24-nor-5α-chol-22-ene 
• 106401-63-2 (4S,6S)-4-Ethyl-6-[(S)-1-((1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl)-ethyl]-3-methyl-tetrahydro-pyran-2-one 
• 106350-92-9 Bromo-acetic acid (S)-1-[(S)-1-((1aR,3aR,3bS,5aS,6R,8aS,8bS,10R,10aR)-10-methoxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl)-ethyl]-3-oxo-pentyl ester 

Downstream Products

• 83-46-5 clionasterol 

Relevant academic research and scientific papers

Stereochemistry in the Hydrogenation of Steroidal (22R)- and (22S)-Δ24-26,22-Lactones

Catalytic hydrogenation of the (22R)-unsaturated lactone 8 and its (22S)-epimer 9 afforded stereoselectively the (22R,24R)-saturated lactone 10 and the (22S,24S)-isomer 11, respectively.The C-24 stereochemistry of the hydrogenated products was determined by their conversion into 24-ethylcholesterols.Keywords - stereoselective hydrogenation; stereoidal lactone; sitosterol; clionasterol