33444-61-0

Upstream product

• 50391-91-8 5-chloro-5α-cholestane-3β,4β-diol 3-monobenzoate 
• 50611-92-2 3β-benzoyloxycholest-5-ene-4-one 

Downstream Products

• 33824-28-1 3β-Benzoyloxycholestan-4-on 
• 29642-80-6 (5R,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-10,13-dimethyl-4-(2-methyl-cyclohex-1-enylethynyl)-2,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene 
• 29642-79-3 (3S,4S,5R,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-10,13-dimethyl-4-(2-methyl-cyclohex-1-enylethynyl)-hexadecahydro-cyclopenta[a]phenanthrene-3,4-diol 

Relevant academic research and scientific papers

REDUCTIONS OF STEROIDAL HALOHYDRINS AND THEIR ESTERS BY TRI-n.BUTYLTIN HYDRIDE; SOME STEREOSPECIFIC 1.2-MIGRATIONS OF ACETOXY- OR BENZOXY-GROUPS

-Six 5α-chloro- and one 5α-bromo-cholestane derivatives bearing hydroxy-, acetoxy- or benzoxy-groups in the 3β and 4β or 3β and 6β positions, 1, 3, 5, 6, 8, 10 and 12 have been hydrogenolysed with the title reagent to afford the corresponding reduced deri

Stereochemistry of the Reduction of 3β-Benzoyloxycholest-5-en-4-one with Sodium Borohydride

Reduction of 3β-benzoyloxycholest-5-en-4-one (3) with sodium borohydride under various conditions affords only minor amounts of 3β-benzoyloxycholest-5-en-4β-ol (2a).The major product is the 4α-isomer (6).Using sodium borodeuteride it has been shown that t