p. 2094 - 2100
(2007/10/02)(2008/06/13)
methanesulphonyl hydrazide
Benzoic acid (5S,8R,9S,10S,13S,14S,17R)-17-ethynyl-17-hydroxy-10,13-dimethyl-3-oxo-hexadecahydro-cyclopenta[a]phenanthren-(2Z)-ylidenemethyl ester
(5α,17α)-2-(hydroxymethylene)-17-hydroxypreg-20-yn-3-one
(1R,3aS,3bR,5aS,10aS,10bS,12aS)-1-Ethynyl-10a,12a-dimethyl-1,2,3,3a,3b,4,5,5a,6,8,10,10a,10b,11,12,12a-hexadecahydro-7,8-diaza-dicyclopenta[a,h]phenanthren-1-ol
methanesulfonyl chloride