... The 4,balkano-bridged pyrido[4,3-blindolones 14 and 15, pyrrolo[3,2-clpyridinone 17, tetrahydropyrrolo[3,2,1- ijl[1,6lnaphthyridinone 19, and the benzofurano- and 0 1993 American Chemical Society ... Page 4. 2648 Journal of Medicinal Chemistry, 1993, Vol. 36, No. 18 ...