Regioselective Synthesis of Isoquino[1,2-<i>b</i>][3]benzazepines (Homoprotoberberines) through 11-Membered-Ring Stilbene Lactams Obtained by Radical Macrocyclization
作者:Gema Rodríguez、Luis Castedo、Domingo Domínguez、Carlos Saá、Waldemar Adam
DOI:10.1021/jo9901900
日期:1999.6.1
Silylated 11-membered-ring stilbene lactams 3 (E and Z) were easily prepared by intramolecular addition of an aryl radical to a trimethylsilylacetylene. Oxidation of their hindered stilbene double bonds with dioxiranes gave oxidative cleavage of their electron-rich aromatic rings. However, reduction of the amide to an amine functionality in both lactams (E and Z) triggers a regioselective [7,6]-transannular
This disclosure concerns antihypertensive isoquinobenzazepines of the formula ##STR1## wherein A and B may be, independently, hydrogen, hydroxy or C.sub.1 -C.sub.6 alkoxy, or A and B together may be --O--(CH.sub.2).sub.n --O-- wherein n may be 1,2 or 3; R.sup.1 and R.sup.2 may be, independently, hydrogen, hydroxy or C.sub.1 -C.sub.6 alkoxy; R.sup.3 may be hydrogen or C.sub.1 -C.sub.4 ; and X may be chlorine, bromine or iodine.
Synthesis of 5,6,8,9,14,14a-hexahydroisoquino[1,2-<i>b</i>][3]benzazepines
作者:Dong H. Kim
DOI:10.1002/jhet.5570290103
日期:1992.1
Syntheses of 5,6,8,9,14,14a-hexahydroisoquino[1,2-b][3]benzazepine-2,3,11,12-tetrol and related compounds are described. Key steps involve an initial construction of the isoquinoline ring under the Bischler-Napieralski conditions, which is followed by the building of the azepine ring via an intramolecular lactam formation on to the isoquinoline nucleus.
描述了5,6,8,9,14,14a-六氢异喹啉[1,2- b ] [3]苯并ze庚因-2,3,11,12-四醇的合成及相关化合物。关键步骤涉及施勒-纳皮耶拉尔斯基条件下异喹啉环,其之后是氮杂环的建筑物的施工初始经由到异喹啉核的分子内内酰胺形成。