(+/-)-r-2-(Ethylthio)-2-cis-3-dimethyl-trans-3-hydroxy-2,3-dihydro-1,4-naphthoquinone

2,3-dimethyl-2-hydroxy-1,2,3,4-tetrahydronaphthalin-1,4-dione

(2S,3S)-3-acetyl-3-hydroxy-2-methoxy-2-methyl-2,3-dihydro-1H-inden-1-one

2(S)-((2,3-threo-Dihydroxy-4-mercaptobutyl)thio)-3-hydroxy-2,3-dimethyl-2,3-dihydro-1,4-naphthoquinone

anti-1,6-dimethyl-3,4-benzo-7,9-dioxabicyclo(4.2.1)nonene-2,5-dione-8-spiro-r-1-t-2',t-3'-epoxy-c-2',c-3'-dimethyl-1',2',3',4',-tetrahydronaphthalen-4-one