Ophiuroidine,来自加勒比海脆性海星Ophiocoma riisei的第一个吲哚[2,1- b ]喹唑啉生物碱
摘要:
一种新的吲哚喹唑啉生物碱,邻氨基吡啶[ 1],具有吲哚[ 2,1 - b ]喹唑啉-6,12-二酮骨架,是从加勒比海蛇形拟南芥(Ophiocoma riisei)分离得到的。从光谱数据确定1的结构为4,8,9-三羟基吲哚[2,1- b ]喹唑啉-6,12-二酮。phiurouroidine 1是在海洋无脊椎动物中发现的吲哚喹唑啉生物碱的第一个实例。
Nickel‐Catalyzed Intramolecular Dual Annulation Reaction of Alkyl Nitrile‐Containing 1,2,3‐Benzotriazin‐4(3H)‐ones: A Pathway to Access Diversely Polycyclic Quinazolinone Alkaloids
作者:Vijaykumar H. Thorat、Yong‐Ran Huang、Hao‐Yu Chao、Jen‐Chieh Hsieh
DOI:10.1002/adsc.202301512
日期:2024.5.21
Herein, we report a nickel‐catalyzed intramolecular dual annulation reaction of alkyl nitrile‐containing 1,2,3‐benzotriazine‐4(3H)‐ones to synthesize polycyclic quinazolinones. This catalytic reaction can construct the core structure of polycyclic quinazolinone alkaloids; therefore, we also apply this reaction as the critical step to access fifteen relevant alkaloids to demonstrate efficacy.