p. 826 - 832
(2007/10/02)3-(4-benzyloxy-2,5-dimethoxyphenyl)-8,9-dihydro-5-methoxy-8,8-dimethyl-4H,10H-benzo<1,2-b:3,4-b'>dipyran-4,10-dione
3-(4-benzyloxy-2,5-dimethoxyphenyl)-8,9-dihydro-5-hydroxy-8,8-dimethyl-4H,10H-benzo<1,2-b:3,4-b'>dipyran-4,10-dione
3-(4-benzoyloxy-2,5-dimethoxyphenyl)-9,10-dihydro-10-hydroxy-8,8-dimethyl-5-tosyloxy-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one
3-(4-benzoyloxy-2,5-dimethoxyphenyl)-8,8-dimethyl-5-tosyloxy-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one
4',5-dihydroxy-2',5'-dimethoxy-2,2-dimethylpyrano<6,5-h>isoflavone
3-(4-benzoyloxy-2,5-dimethoxyphenyl)-8,9-dihydro-5-hydroxy-8,8-dimethyl-4H,10H-benzo<1,2-b:3,4-b'>dipyran-4,10-dione