Novel vitamin D receptor ligands bearing a spherical hydrophobic core structure—Comparison of bicyclic hydrocarbon derivatives with boron cluster derivatives
摘要:
Vitamin D receptor (VDR) is a nuclear receptor for 1 alpha, 25-dihydroxyvitamin D-3 (1 alpha, 25(OH)(2)D-3), and is an attractive target for multiple clinical applications. We recently developed novel non-secosteroidal VDR ligands bearing a hydrophobic p-carborane cage, thereby establishing the utility of this spherical hydrophobic core structure for development of VDR ligands. Here, we synthesized two series of novel non-secosteroidal VDR ligands with different spherical hydrophobic cores, that is, bicyclo[2.2.2] octane derivatives and p-carborane derivatives, and compared their biological activities in order to examine the difference between the interactions of the C-H hydrocarbon surface and the B-H carborane surface with the receptor. Carborane derivatives exhibited more potent differentiation-inducing activity toward HL-60 cells than did the corresponding bicyclo[2.2.2] octane derivatives. These results suggest that the hydrophobic carborane cage may interact more efficiently than the hydrocarbons with the hydrophobic surface of VDR. This finding further supports the view that carborane structure is a promising option for drug development. (C) 2012 Elsevier Ltd. All rights reserved.
based on p-carborane (an icosahedral carbon-containing boron cluster) as a hydrophobic core structure. Here, we report the design, synthesis and biological evaluation of carborane-based vitamin D analogs bearing various substituents at the diol moiety. Among the synthesized compounds, methylene derivative 31 exhibited the most potent vitamin D activity, which was comparable to that of the natural hormone
非类固醇维生素D受体(VDR)配体是许多临床应用中有希望的候选物。最近,我们开发了一种基于新的非secosteroidal VDR激动剂p -carborane(二十面体含碳硼簇)作为疏水性核心结构。在这里,我们报告在二醇部分带有各种取代基的基于硼烷的维生素D类似物的设计,合成和生物学评估。在合成的化合物中,亚甲基衍生物31具有最强的维生素D活性,与天然激素1α,25(OH)2 D 3相当。。该化合物是迄今为止报道的最有效的非类固醇类VDR激动剂之一,是开发新型候选药物的有希望的先导。
Fujii, Shinya; Masuno, Hiroyuki; Taoda, Yoshiyuki, Journal of the American Chemical Society, 2011, vol. 133, p. 20933 - 20941