Synthesis and stereochemistry of new trihydrodiazabicyclo-[3.m.n]alkano[4′,5′:1,2]pyrido[3,4-<i>b</i>]indole ring system
作者:Stanislaw Misztal、Maria H. Paluchowska、Maria J. Mokrosz、Piotr Bartyzel、Jerzy L. Mokrosz
DOI:10.1002/jhet.5570300616
日期:1993.12
Cyclocon-densation of the spirotetrahydrocarboline with chloroacetic chloride and the subsequent reductive debenzylation afforded the new ring systems of trihydrodiazabicyclo[3.m.n]alkano[4′,5′:1,2]pyrido[3,4-b]indoles 8a, 8b, and 8c. The structures of the bicyclic systems 8a, 8b, and 8c were determined by using both, high-resolution 1H and 13C nmr techniques and force field and MNDO calculations.
色胺与异构体N-苄基哌啶酮3a,3b和N-苄基吡咯烷酮3c的经典Pictet-Spengler反应产生了1,2,3,4-四氢-β-咔啉5a,5b和5c的螺环衍生物。螺四氢咔啉与氯乙酸氯的环缩合反应和随后的还原性脱苄基作用提供了三氢二氮杂双环[3.mn]链烷[4',5':1,2,吡啶基[3,4- b ]吲哚8a,8b的新环系统和8c。双环系统8a,8b和8c的结构通过使用高分辨率1 H和13 C nmr技术以及力场和MNDO计算来确定。