171599-52-3

Upstream product

• 171525-94-3 (4aR,6aS,6bR,8aS,10S,12aS,12bS,14aS)-10-(tert-Butyl-diphenyl-silanyloxy)-3-((S)-1-hydroxy-3-methyl-but-3-enyl)-4,12a-dimethyl-5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13-tetradecahydro-4aH-2-oxa-indeno[1,7a-a]phenanthren-14-one 
• 171525-84-1 (4aR,6aS,6bR,8aS,10S,12aS,12bS,14aS)-10-(tert-Butyl-diphenyl-silanyloxy)-3-((R)-1-hydroxy-3-methyl-but-3-enyl)-4,12a-dimethyl-5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13-tetradecahydro-4aH-2-oxa-indeno[1,7a-a]phenanthren-14-one 
• 171525-86-3 (4aR,6aS,6bR,8aS,10S,12aS,12bS,14aS)-3-((R)-1-Benzyloxy-3-methyl-but-3-enyl)-10-(tert-butyl-diphenyl-silanyloxy)-4,12a-dimethyl-5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13-tetradecahydro-4aH-2-oxa-indeno[1,7a-a]phenanthren-14-one 
• 171525-83-0 (4aR,6aS,6bR,8aS,10S,12aS,12bS,14aS)-10-(tert-Butyl-diphenyl-silanyloxy)-4,12a-dimethyl-14-oxo-4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14-hexadecahydro-2-oxa-indeno[1,7a-a]phenanthrene-3-carbaldehyde 

Relevant academic research and scientific papers

Synthesis of C(14',15'), dihydro derivative of the South hexacyclic steroid unit in cephalostatin 1. Part II: Spiroketal synthesis and stereochemical assignment by NMR spectroscopy

Transformation of aldehyde 3 into 2, a C(14',15'), dihydro analog of the 'South' hexacyclic spiroketal of cephalostatin 1 1 is described. The stereochemistry of 2 was elucidated by NMR spectroscopy.