The synthesis and biological evaluation of alkyl and benzyl naphthyridinium analogs of eupolauridine as potential antimicrobial and cytotoxic agents
作者:Shahriyar Taghavi-Moghadam、Cecil D. Kwong、John A. Secrist、Shabana I. Khan、Alice M. Clark
DOI:10.1016/j.bmc.2016.02.028
日期:2016.12
Eupolauridine, an indenonaphthyridine alkaloid, has been previously reported by us to exhibit antifungal activity. This study describes the synthesis of new alkyl and benzyl naphthyridinium/pyridinium analogs of eupolauridine as potential antifungal agents. A majority of the analogs exhibited antifungal activity against opportunistic pathogens such as Candida albicans and Cryptococcus neoformans. Several
economy, good to excellent yields, and recylability of the organopromoter, making it a valuable green alternative to the existing methods. The versatility and practicability of the developed method was further established by its successful application towards the targeted synthesis of some important quinoline molecules and successful scale up.
metal-free protocol for the synthesis of indenoquinolinones and 2-substituted quinolinesvia [4 + 2] cycloaddition reaction using readily available 2-aminobenzaldehydes and ketones as starting materials. Different quinoline derivatives can be selectively synthesized by changing the type of ketones. O2 and dimethyl sulfoxide (DMSO) as co-oxidants play an important role in the synthesis of indenoquinolinones
Synthesis of Eupolauridine and Its Benzo-Annulated Derivative
作者:Tat Hung Tong、Henry N.C. Wong
DOI:10.1080/00397919208020497
日期:1992.6
The unique diazafluoranthene alkaloid eupolauridine (1) was synthesized by a three-step route utilizing as the initial step the thermal rearrangement of the oxime O-crotyl ether 12, which afforded onychine (2). Bracher pyridine synthesis procedure subsequently converted 2 into 1. On the other hand, Friedlander reaction was employed for the synthesis of 3, which is a benzo-annulated derivative of eupolauridine (1).