p. 4347 - 4353
(2007/10/02)((1S,4aS,8aS)-7-Methoxy-8a-methoxymethyl-2-methyl-5,8-dioxo-1,4,4a,5,8,8a-hexahydro-naphthalen-1-yl)-acetic acid
((1R,4aR,8aR)-7-Methoxy-8a-methoxymethyl-5,8-dioxo-1,4,4a,5,8,8a-hexahydro-naphthalen-1-yl)-acetic acid
((1S,4aR,8aS)-7-Methoxy-8a-methoxymethyl-2-methyl-5,8-dioxo-1,4,4a,5,8,8a-hexahydro-naphthalen-1-yl)-acetic acid
((1R,4aS,8aR)-7-Methoxy-8a-methoxymethyl-5,8-dioxo-1,4,4a,5,8,8a-hexahydro-naphthalen-1-yl)-acetic acid