p. 1001 - 1003
(1998)[(1R,4S,4aR,5R,8R,8aS)-8-(tert-Butyl-dimethyl-silanyloxy)-5-hydroxy-1,4,4a,5,6,7,8,8a-octahydro-1,4-methano-naphthalen-5-yl]-acetic acid ethyl ester
((1R,4S,4aR,5S,8aS)-5-Hydroxy-8-oxo-1,4,4a,5,8,8a-hexahydro-1,4-methano-naphthalen-5-yl)-acetic acid ethyl ester
(1R,4S,4aR,5R,8R,8aS)-8-(tert-Butyl-dimethyl-silanyloxy)-5-(2-hydroxy-ethyl)-1,4,4a,5,6,7,8,8a-octahydro-1,4-methano-naphthalen-5-ol
((1R,4S,4aR,5R,8aS)-5-Hydroxy-8-oxo-1,4,4a,5,6,7,8,8a-octahydro-1,4-methano-naphthalen-5-yl)-acetic acid ethyl ester
((1R,4S,4aR,5S,8R,8aS)-5,8-Dihydroxy-1,4,4a,5,8,8a-hexahydro-1,4-methano-naphthalen-5-yl)-acetic acid ethyl ester