Issue 38, 2021

Total syntheses and antiproliferative activities of prenostodione and its analogues

Abstract

A high-yielding total synthesis of the indole alkaloid prenostodione was completed in 4 steps and 44% overall yield from 1H-indole-3-carboxylic acid. The expedient syntheses of prenostodiones containing distinct substituents at the para position of the phenyl frame underscored the scope of this methodology. The cytotoxic activities of the tert-butyl esters of prenostodione analogues were tested using six tumor cell lines. Preliminary structure-activity studies revealed the importance of the identity of the aromatic substituent at the C-4 position for cytotoxic activity. The IC50 values of these compounds were found to compare satisfactorily with those of the commercially available drugs etoposide and cisplatin. Furthermore, the compounds with, respectively, –OMe (14d) and –NO2 (14f) groups at C-4 were more selective than these control compounds in PC-3, K-562, and MCF-7 cells. Also, computational studies were carried out to determine the ADMET profiles and passive membrane permeabilities of the compounds. The results suggested the promise of 14d and 14f as hit compounds for the development of new anticancer agents.

Graphical abstract: Total syntheses and antiproliferative activities of prenostodione and its analogues

Supplementary files

Article information

Article type
Paper
Submitted
07 May 2021
Accepted
26 Aug 2021
First published
26 Aug 2021

Org. Biomol. Chem., 2021,19, 8272-8280

Total syntheses and antiproliferative activities of prenostodione and its analogues

A. Ramos-Orea, T. Ramírez-Apan, R. M. Chávez-Santos, R. Aguayo-Ortiz, C. Espitia, M. Silva Miranda, R. O. Torres-Ochoa and R. Martínez, Org. Biomol. Chem., 2021, 19, 8272 DOI: 10.1039/D1OB00897H

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