Construction of a meroterpenoid-like compound collection by precursor-assisted biosynthesis
作者:Panlong Ren、Xinyu Miao、Ting Tang、Yueting Wu、Jing Wang、Ying Zeng、Yun Li、Kun Gao、Yan-Long Yang
DOI:10.1039/d0ob01235a
日期:——
generate NP-like compounds offer unique opportunities to access bioactive compounds. Here we present a new approach, precursor-assisted biosynthesis (PAB), for the creation of NP-like compounds by combination of artificial supplementation of common precursors and divergent post-modifications of precursor-deficient fungi. This method was applied to construct a meroterpenoid-like compound collection containing
Magnesium dicarboxylates promote the prenylation of phenolics that is extended to the total synthesis of icaritin
作者:Jichao Zhang、Wei Xiong、Yongju Wen、Xuewen Fu、Xiaoxia Lu、Guolin Zhang、Chun Wang
DOI:10.1039/d1ob02228h
日期:——
study of the prenylation provided evidence for the nucleophilic addition/substitution of the phenolic substrate to the alkyl halide in the presence of the magnesium dicarboxylates. The proto application of this method in the total synthesis of icaritin through the prenylation of 2,4,6-trihydroxyacetophenone, followed by the reaction with benzaldehyde to afford the flavonol, was successful, with a total
Synthesis and Antitumor Activity Evaluation of Compounds Based on Toluquinol
作者:Iván Cheng-Sánchez、José A. Torres-Vargas、Beatriz Martínez-Poveda、Guillermo A. Guerrero-Vásquez、Miguel Ángel Medina、Francisco Sarabia、Ana R. Quesada
DOI:10.3390/md17090492
日期:——
cytotoxic activity of this family of compounds could rely on the hydroquinone/benzoquinone part of the molecule, whereas the substituents might modulate the interaction of the molecule with their targets, changing either its activity or its selectivity. The methyl group is relevant for the cytotoxicity of toluquinol, since its replacement by other groups resulted in a significant loss of activity, and in
inhibitory activity. The multiple pharmacologicalproperties of avarol, thio-avarol and/or their derivatives prompted us to continue the in vitro screening, focusing on their AChE inhibitory and neuroprotective effects. Due to the complex nature of Alzheimer’s disease (AD), there is a renewed search for new, non hepatotoxic anticholinesterasic compounds. This paper describes the synthesis and in vitro biological
total synthesis of coscinosulfate 1, a metabolite isolated from a sea sponge, starting from (+)-sclareolide 3 is described. The convergent synthesis strategy relies on the coupling of sulfone 21 with the bromide 26. The sulfone fragment 21 was obtained by successive asymmetric aldol reaction with aldehyde 2 to introduce the stereocenters at C-12 and C-13, followed by one-carbon homologation via Horner-Wadsworth-Emmons