Rearrangement of spiro[2<i>H</i>-1-benzopyran-2,2′-[2<i>H</i>]indoles] to pyrrolo[1,2-<i>a</i>]indole derivatives
作者:Vytas Martynaitis、Algirdas Šačkus、Ulf Berg
DOI:10.1002/jhet.5570390602
日期:2002.11
Heating of 1′-(N-substituted carbamoyl)methylspiro[2H-1-benzopyran-2,2′-[2H]indoles] with potassium hydroxide in ethanol yields diastereomeric 5a,13-methano-6H-1,3-benzoxazepino[3,2-a]indole-12-carbox-amides. Reduction of the latter with sodium borohydride affords 1,2,3,9a-tetrahydro-2-hydroxyaryl-9H-pyrrolo[ 1,2-a] indole-3 -carboxamides.
用乙醇中的氢氧化钾加热1'-(N-取代的氨基甲酰基)甲基螺基[2 H -1-苯并吡喃-2,2'-[2 H ]吲哚],得到非对映异构体5a,13-methano-6 H -1,3 -苯并恶嗪[3,2 - a ]吲哚-12-羧酰胺。用硼氢化钠还原后者,得到1,2,3,9a-四氢-2-羟基芳基-9 H-吡咯并[1,2 - a ]吲哚-3-羧酰胺。