p. 5476 - 5486
(2013/06/05)p. 9452 - 9455
(2011/11/06)2-[(2R,4S,5S,6R,7S)-2-tert-butyldiphenylsilyloxymethyl-7-formyl-4,7-dimethyl-1-oxaspiro[4.4]non-6-yl]ethyl pivalate
2-[(2R,4S,5S,6R,7S)-2-tert-butyldiphenylsilyloxymethyl-7-hydroxymethyl-4,7-dimethyl-1-oxaspiro[4.4]non-6-yl]ethyl pivalate
2-{(1S,2S,3R,5S)-2-{[(2R,4S,5S,6R,7R)-6-allyl-2-({[tert-butyl(diphenyl)silyl]oxy}methyl)-4,7-dimethyl-1-oxaspiro[4.4]non-7-yl]methyl}-5-{[tert-butyl(diphenyl)silyl]oxy}-3-methyl-3-[(trimethylsilyl)oxy]cyclopentyl}prop-2-en-1-ol
1-{(1R,2S,3R,5S)-2-{[(2R,4S,5S,6R,7R)-6-allyl-2-tert-butyldiphenylsilyloxymethyl-4,7-dimethyl-1-oxaspiro[4.4]non-7-yl]methyl}-5-tert-butyldiphenylsilyloxy-3-methyl-3-trimethylsilyloxycyclopentyl}ethanone
1-((1R,2S,3R,5S)-2-{[(2R,4S,5S,6R,7R)-6-allyl-2-tert-butyldiphenylsilyloxymethyl-4,7-dimethyl-1-oxaspiro[4.4]non-7-yl]methyl}-5-tert-butyldiphenylsilyloxy-3-hydroxy-3-methylcyclopentyl)ethanone