Synthesis and Structure-Activity Relationships of Vasicine Analogues as Bronchodilatory Agents
作者:Neeraj Mahindroo、Zabeer Ahmed、Asha Bhagat、Kasturi Lal Bedi、Ravi Kant Khajuria、Vijay Kumar Kapoor、Kanaya Lal Dhar
DOI:10.1007/s00044-006-0141-7
日期:2005.9
The series of vasicine ( 1 ) analogues, an alkaloid from Adhatoda vasica Nees., were synthesized with changes in A, B or C rings. Compounds 13-19 were evaluated for in vitro bronchodilatory activity using isolated guinea pig tracheal chain. Compounds 3-8 were also synthesized in good yields using microwave-mediated synthesis under solvent free conditions. Compounds 5 and 8 with seven-member C ring
合成了一系列的vasicine( 1 )类似物,一种来自 Adhatoda vasica Nees。的生物碱 ,但其A,B或C环发生了变化。使用分离的豚鼠气管链评价化合物 13-19的 体外支气管扩张活性。使用无溶剂条件下的微波介导的合成,也可以高收率合成化合物 3-8 。化合物 5 和 8 具有七元C环的化合物比依托茶碱更活泼,并导致组胺和乙酰胆碱预包装的豚鼠气管链均100%松弛。结构-活性关系研究表明,喹唑啉和氧代官能团对于活性至关重要。没有C环而在B环中具有脂族和苯基取代的化合物仅对组胺预收缩的气管链表现出松弛,2-甲基取代的类似物 12 和 13 最具活性,具有100%的松弛作用。