1,2,3-trimethoxy-8-vinyl-5,6-dihydro-benzocyclohepten-7-one

2,3,4-trimethoxy-6-vinyl-8,9-dihydro-5H-benzocyclohepten-5-ol

tert-butyl-dimethyl-(2,3,4-trimethoxy-6-vinyl-8,9-dihydro-5H-benzocyclohepten-5-yloxy)-silane

tert-butyl-dimethyl-(1,2,3-trimethoxy-8-vinyl-6,7-dihydro-5H-benzocyclohepten-7-yloxy)-silane

9,10,11-trimethoxy-5-oxo-6,7-dihydro-5H-dibenzo[a,c]cycloheptene-2-carboxylic acid methyl ester