219906-41-9

Upstream product

• 50-00-0 formaldehyd 
• 219906-40-8 (Z)-3β-(tert-butyldiphenylsiloxy)pregna-5,17-diene 
• 53-43-0 dehydroepiandrosterone 

Downstream Products

• 219906-58-8 C₇₃H₁₂₈O₁₆Si₄ 
• 219906-45-3 tert-Butyl-((3S,8R,9S,10R,13S,14S)-10,13-dimethyl-17-{(S)-1-[2-(3-methyl-butyl)-[1,3]dioxolan-2-yl]-ethyl}-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-3-yloxy)-diphenyl-silane 
• 219906-44-2 3β-(tert-butyldiphenylsiloxy)cholesta-5,16-dien-22-one 
• 219906-43-1 (22S)-3β-(tert-butyldiphenylsiloxy)cholesta-5,16-dien-22-ol 
• 145075-81-6 3β,16β,17α-trihydroxycholest-5-en-22-one 16-O-{O-[2-O-(4-methoxybenzoyl)-β-D-xylopyranosyl]-(1->3)-2-O-acetyl-β-L-arabinopyranoside} 
• 219906-42-0 (S)-2-[(3S,8R,9S,10R,13S,14S)-3-(tert-Butyl-diphenyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-propionaldehyde 

Relevant academic research and scientific papers

First total synthesis of an exceptionally potent antitumor saponin, OSW- 1

OSW-1 (1), an acylated disaccharide cholestane saponin from Ornithogalum saudersiae with exceptionally potent antitumor activity, was first synthesized from commercially available dehydroisoandrosterone, L-arabinose, and D-xylose in total 27 steps with the longest linear sequence of 14 steps and in 6% yield.