Anthracene-Based Schiff Base Allied Triazolyl Silatranes: A Comparison of Stability and Biological Activity With Open Analog Silane

Abstract

In this article, we have synthesized a series of anthracene-based triazolyl silatranes (ABSiT 1–7) using their open analogs, that is, anthracene-based triazolyl tri-ethoxysilanes via transesterification reaction. All synthesized compounds have been characterized using FTIR, NMR (¹H and ¹³C), DFT techniques, and TGA/DSC analysis to identify the stability and melting temperatures. The prepared silatranes were subsequently subjected to hydrolysis to compare their stability with their open-chain counterparts and explore their behavior under hydrolytic conditions. The data demonstrate that silatranes are about three times less prone to attack by water than organo-triethoxysilane and are hydrolytically more stable. Moreover, the thermal stability and pH stability were checked, and it was found that silatranes are stable up to a temperature range of 400°C and at pH 9.4, thus indicating that silatranes are more stable than their corresponding silanes at higher temperatures and large pH range. Moreover, all synthesized silatranes were tested for antioxidant and cytotoxicity activities, and the results disclosed their efficacy. A molecular docking study showed interactions of silatranes with Mutant p53 antitumor protein with binding affinity in the range −8.0 to −9.0 kcal/mol and identified as potent inhibitors.