142980-90-3

Upstream product

• 18162-48-6 tert-butyldimethylsilyl chloride 
• 142980-89-0 ethyl <(2'R,5'R)-1',5-'dihydroxy-2'-methylcyclohexyl>ethanoate 
• 142980-87-8 ethyl <(2'R,5'R)-6-hydroperoxy-2',6-'dimethylbicyclo<3.2.1>-7'-oxaoctyl>ethanoate 
• 142980-88-9 ethyl <(2'R,5'R)-5'-acetoxy-1'-hydroxy-2'-methylcyclohexyl>ethanoate 
• 142980-89-0 ethyl <(1'R,2'S,5'S)-1',5-'dihydroxy-2'-methylcyclohexyl>ethanoate 
• 142980-87-8 ethyl <(1'R,2'S,5'S)-6-hydroperoxy-2',6-'dimethylbicyclo<3.2.1>-7'-oxaoctyl>ethanoate 
• 142980-88-9 ethyl <(1'R,2'S,5'S)-5'-acetoxy-1'-hydroxy-2'-methylcyclohexyl>ethanoate 

Downstream Products

• 141277-84-1 (2E)-ethyl <(2'R,5'R)-5'-<(tert-butyldimethylsilyl)oxy>-2'-methylcyclohexylidene>ethanoate 
• 142980-91-4 (2E)-ethyl <(2'S,5'S)-5'-<(tert-butyldimethylsilyl)oxy>-2'-methylcyclohexylidene>ethanoate 
• 142980-94-7 dihydrotachysterol₂ tert-butyldimethylsilyl ether 
• 98830-20-7 25-hydroxydihydrotachysterol₂ 
• 141277-81-8 (2E)-<2-<(2'S,5'S)-5'-<(tert-butyldimethylsilyl)oxy>-2'-methylcyclohexylidene>ethyl>diphenylphosphine oxide 
• 142980-92-5 (2E)-2-<(2'S,5'S)-5'-<(tert-butyldimethylsilyl)oxy>-2'-methylcyclohexylidene>ethanol 
• 141277-87-4 25-<(methoxymethyl)oxy>dihydrotachysterol₂ tert-butyldimethylsilyl ether 
• 67-96-9 Dihydrotachysterol₂ 
• 141277-87-4 25-<(methoxymethyl)oxy>-10(R),19-dihydro-(5E)-3-epivitamin D₂ tert-butyldimethylsilyl ether 
• 142980-94-7 10(R),19-dihydro-(5E)-3-epivitamin D₂ tert-butyldimethylsilyl ether 
• 143060-74-6 25-hydroxy-10(R),19-dihydro-(5E)-3-epivitamin D₂ 
• 143060-73-5 10(R),19-dihydro-(5E)-3-epivitamin D₂ 
• 141277-80-7 (2E)-<2-<(2'R,5'R)-5'-<(tert-butyldimethylsilyl)oxy>-2'-methylcyclohexylidene>ethyl>diphenylphosphine oxide 
• 141277-85-2 (2E)-2-<(2'R,5'R)-5'-<(tert-butyldimethylsilyl)oxy>-2'-methylcyclohexylidene>ethanol 

Relevant academic research and scientific papers

A Convergent Approach to the Dihydrotachysterol Diene System. Application to the Synthesis of Dihydrotachysterol2 (DHT2), 25-Hydroxydihydrotachysterol2 (25-OH-DHT2), 10(R),19-dihydro-(5E)-3-epivitamin D2, and 25-Hydroxy-10(R),19-dihydro-(5E)-3-epivitamin D2

Total synthesis of A-ring fragments of 10(S),19-dihydrovitamins D and 10(R),19-dihydro-(5E)-epivitamins D from (+)-(S)-carvone and (-)-(R)-carvone is described.These fragments were used for convergent synthesis of dihydrotachysterol2 (DHT2), 25-hydroxydihydrotachysterol2, 10(R),19-dihydro-(5E)-3-epivitamin D2, and 25-hydroxy-10(R),19-dihydro-(5E)-3-epivitamin D2.