90525-27-2

Upstream product

• 145-13-1 Pregnenolone 
• 59042-34-1 3β,20-dihydroxypregn-5-ene 
• 90582-06-2 20ξ-hydroxypregna-1,4,6-trien-3-one 
• 90525-19-2 1α,3β-bismethoxymethoxy-20ξ-hydroxypregn-5-ene 
• 90582-08-4 1α,3β-dihydroxy-20ξ-tetrahydropyranyloxypregn-5-ene 
• 90525-18-1 (8S,9S,10R,13S,14S,17S)-10,13-Dimethyl-17-[1-(tetrahydro-pyran-2-yloxy)-ethyl]-8,9,10,11,12,13,14,15,16,17-decahydro-cyclopenta[a]phenanthren-3-one 
• 90525-20-5 1α,3β-bismethoxymethoxypregn-5-en-20-one 
• 90582-07-3 1α,2α-epoxy-20ξ-tetrahydropyranyloxypregna-4,6-dien-3-one 
• 90540-50-4 (20R)-1α,3β-bismethoxymethoxy-20-formyl-20-hydroxypregn-5-ene 
• 79240-65-6 1α,3β,20α_F-trihydroxy-20R,22R-witha-5,24-dienolide 
• 90540-49-1 2-[1-((1S,3R,8S,9S,10R,13S,14S,17S)-1,3-Bis-methoxymethoxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)-ethoxy]-tetrahydro-pyran 
• 90525-22-7 (20R)-20-formyl-1α,3β,20-trismethoxymethoxypregn-5-ene 
• 90525-24-9 (20R,22R)-3β-t-butyldimethylsilyloxy-1α,20-dihydroxywitha-5,24-dienolide 
• 90525-25-0 (20R,22R)-3β-t-butyldimethylsilyloxy-1α,20-dihydroxy-5α,6α-epoxywith-24-enolide 

Downstream Products

• 90525-28-3 (20R,22R)-20-dihydroxy-6β-phenylthio-1-oxowitha-2,4,24-trienolide 
• 30655-48-2 withanolide D 

Relevant academic research and scientific papers

Stereocontrolled Synthesis of Withanolide D and Related Compounds

The synthesis of withanolide D, a withanolide having a hydroxy group at the C-20 position, has been accomplished from pregnenolone.The key reactions are based on successful stereochemical control at the C-22 position involving γ-coupling reaction of a lit