1a-(tert-butoxy)-1a,9b-dihydro-1H-cyclopropa[l]phenanthrene

ethyl 1-(benzylideneamino)cyclopropane-1-carboxylate

tert-butyl 4-methoxybenzoate

2-(叔-丁氧基)吡啶

吲哚-2-羧酸叔丁酯