567-71-5

Upstream product

• 22033-90-5 17-(1,5-Dimethyl-hexyl)-10,13-dimethyl-1,2,3,4,8,9,10,11,12,13,14,15,16,17-tetradecahydro-cyclopenta[a]phenanthren-7-one 
• 567-72-6 cholest-3,5-dien-7-one 
• 25904-30-7 5α-cholesten-(8)-one-(7) 
• 19037-34-4 5α-cholestan-7β-ol 
• 73581-92-7 4β-acetoxycholest-5-en-7-one 
• 79732-44-8 cholest-5-en-7-one 
• 475-32-1 cholest-4(5)-en-7β-ol 
• 17137-93-8 cholesta-1,3,5-trien-7-one 
• 22799-20-8 3α,4α-epoxy-5-en-cholest-7-one 
• 20835-07-8 5α-Cholestandiol-(7α,8α) 
• 141-78-6 ethyl acetate 
• 60-29-7 diethyl ether 
• 64-19-7 acetic acid 
• 570-74-1 cholest-5-ene 

Downstream Products

• 19037-32-2 5α-cholestan-7α-ol 
• 19037-34-4 5α-cholestan-7β-ol 
• 29599-03-9 6,7-seco-5α-cholestane-6,7-dioic acid 
• 96616-62-5 Formic acid (1R,3aR,4S,5R,7aR)-1-((R)-1,5-dimethyl-hexyl)-5-((1R,2S)-2-iodomethyl-1-methyl-cyclohexyl)-7a-methyl-octahydro-inden-4-yl ester 
• 6673-62-7 7β-(toluene-4-sulfonyloxy)-5α-cholestane 
• 40071-65-6 5α-cholest-7-ene 
• 54725-42-7 Δ^8,14-cholestene 

Relevant academic research and scientific papers

Syntheses and CD Studies of New Cholesteno- and -pyrimidines

The syntheses of 5α- and 5β-cholest-3-enopyrimidines (7) and (7') could be achieved by using the hydroxymethylene derivative of cholestan-4-one (5) prepared from cholesterol (1).Their 2'-derivatives 7a-7d and 7'a-7'c were also synthesized. 5α-Cholest-6-enopyrimidine (13) was prepared by the reaction of 5α-cholestan-7-one (12) with tris(formylamino)methane.The CD spectra exhibit at least three Cotton effects between 300 and 210 nm, a first CD band around 290, a second one around 260, and a third one around 220 nm.An earlier developed quadrant rule can be applied to the determination of the sign of the first CD band, while the suggested helicity rule allows prediction of the third CD band. - Keywords: Cholestenopyrimidines / Circular dichroism / Quadrant rule of cholestenopyrimidines

Stereochemical course of hydroboration of highly hindered steroidal olefins. A ready synthesis of 14β- and 8α,14β-steroids

Hydroboration of 5α-cholest-8-ene, 5α,14β-cholest-8-ene and 5α,14β-cholest-7-ene provides a simple route to oxygenated steroids with 14β- and 8α,14β- unnatural stereochemistry.