作者:J.Hodge Markgraf、Scott A. Snyder、David A. Vosburg
DOI:10.1016/s0040-4039(97)10794-8
日期:1998.3
An efficient, four-step route to isocanthin-6-one (4) is reported. The key step is an intramolecular hetero Diels-Alder reaction.
报道了一种高效的,四步骤的异黄素-6-一(4)路线。关键步骤是分子内杂Diels-Alder反应。
Intramolecular Hetero Diels–Alder Routes to γ-Carboline Alkaloids
作者:Scott A Snyder、David A Vosburg、Matthew G Jarvis、J.Hodge Markgraf
DOI:10.1016/s0040-4020(00)00468-3
日期:2000.7
Concise and efficient routes to the carboline alkaloids isocanthine (3), isocanthin-6-one (4), 1-methylisocanthine (5), and 1-methylisocanthin-6-one (6) are reported. In each case, the key synthetic step was an intramolecular hetero Diels–Alder reaction of a 1-aza-1,3-diene with an acetylenic dienophile.