p. 403 - 411
(2007/10/02)p. 2589 - 2596
(2007/10/02)Δ3-2,2-dimethyl-7-tosyloxy-benzopyran
3,4-dihydro-4-hydroxy-2,2-dimethyl-2H-benzo[b]pyran
2,3-dihydro-2,2-dimethylbenzo[b]pyran-4-one
7-hydroxy-2,2-dimethyl-chroman-4-one
Toluene-4-sulfonic acid 2,2-dimethyl-5-oxo-2,3,4,5-tetrahydro-benzo[f][1,4]oxazepin-8-yl ester