Formation of 6-Azaindoles by Intramolecular Diels–Alder Reaction of Oxazoles and Total Synthesis of Marinoquinoline A
作者:Mana Osano、Dishit P. Jhaveri、Peter Wipf
DOI:10.1021/acs.orglett.0c00417
日期:2020.3.20
6-azaindoles was developed. The IMDAO reaction was applied in a total synthesis of the aminophenylpyrrole-derived alkaloid marinoquinoline A, also featuring the use of a Curtius reaction for preparation of a 5-aminooxazole, a propargylic C,H-bond insertion, an in situ alkyne-allene isomerization, and a ruthenium-catalyzed cycloisomerization for benzene ring annulation to the 6-azaindole.
开发了分子内Diels-Alder恶唑(IMDAO)环加成反应的新变体,该变体提供了直接接触6-氮杂吲哚的能力。IMDAO反应用于氨基苯基吡咯衍生的生物碱马诺喹啉A的全合成中,其特征还在于使用Curtius反应制备5-氨基恶唑,炔丙基C,H键插入,原位炔烃-丙二烯异构化,以及钌催化的环异构化,用于苯环环化成6-氮杂吲哚。