Pseudoceratidine, a marine natural product with antifouling activity: Synthetic and biological studies
摘要:
Syntheses of pseudoceratidine and several analogs were developed in order to explore structure-activity relationships responsible for antifouling and antimicrobial activity. (C) 1998 Elsevier Science Ltd. All rights reserved.
Synthesis of the antifouling polyamine pseudoceratidine and its analogs: Factors influencing biocidal activity
作者:James A Ponasik、Darren J Kassab、Bruce Ganem
DOI:10.1016/0040-4039(96)01310-x
日期:1996.8
Syntheses of the title compound 1 and its N-8 and N-1-monoacylated analogs 5 and 8, respectively, are reported. Assays of 1, 5, and 8 indicate that the number and position of the acyl substituents affect bioactivity. Copyright (C) 1996 Elsevier Science Ltd
A convenient synthesis of pseudoceratidine and three analogs for biological evaluation
作者:Carsten Behrens、Martin W. Christoffersen、Lone Gram、Per Halfdan Nielsen
DOI:10.1016/s0960-894x(96)00622-1
日期:1997.2
The recently isolated marine natural product pseudoceratidine (1) has been synthesized from 2-trichloroacetylpyrrole. Bromination in the 4- and 5-position followed by nucleophilic displacement of the trichloromethyl group with spermidine gave 1 in 79% yield. The procedure is general and can easily be adopted to the preparation of other derivatives. This was demonstrated by the synthesis of a 5,5'-didebromo derivative (2) and two analogs (3-4). The compounds 1-4 have been tested for antibacterial activity and the results compared to a previous study. Also activity against the marine brine shrimp Artemia salina is reported. (C) 1997, Elsevier Science Ltd.