[EN] A METHOD FOR SYNTHESIZING XANTHOHUMOL [FR] PROCÉDÉ DE SYNTHÈSE DE XANTHOHUMOL
摘要:
A method for synthesizing xanthohumol (XN) from naringenin comprising steps of acylating hydroxyl groups of a naringenin flavone moiety to obtain an acylation product, a reaction of conversion of the flavone moiety into a chalcone moiety, and subjecting the chalcone compound to a reaction of hydrolysis of its ester groups, and next to a reaction of substitution of a prenyl moiety of the chalcone moiety to obtain xanthohumol. The xanthohumol produced by this method can be purified using crystallisation.
A surprisingly selective, non‐enzymatic kinetic resolution of readily available, racemic β‐chiral ketones enabled the title process, which was applied to a rapid synthesis of several bioactive flavanones in virtually enantiopure form (see scheme; MOM=methoxymethyl, Ts=p‐toluenesulfonyl).
令人惊讶的选择性容易获得的,外消旋的β-手性酮的,非酶动力学拆分启用标题处理,(见方案将其应用于多个生物活性黄烷酮的快速合成在几乎对映体纯形式; MOM =甲氧基甲基,在Ts = p -甲苯磺酰基)。
BIOREACHABLE CHIRAL DOPANTS FOR LIQUID CRYSTAL APPLICATIONS
申请人:Zymergen Inc.
公开号:US20220025267A1
公开(公告)日:2022-01-27
The disclosure discusses chiral dopants for liquid-crystalline materials. Chiral dopants can be bioreachable compounds, i.e. compounds produced from microbes through fermentation. Chiral dopants can also include bioreachable materials that are further modified by chemical synthetic steps. Chiral dopants as discussed herein can include biomolecules such as glycyrrhetinic acid (1), S-narigenin (2), shikimic acid (3), alpha-phellandrene (4), betulin (5), malic acid (6), valencene (7), or nootkatone (8), and any stereoisomers or chemically modified derivatives thereof. The disclosure further shows optical properties of such compounds in a liquid-crystalline material.
[EN] BIOREACHABLE CHIRAL DOPANTS FOR LIQUID CRYSTAL APPLICATIONS<br/>[FR] DOPANTS CHIRAUX "BIOATTEIGNABLES" POUR DES APPLICATIONS DE CRISTAUX LIQUIDES
申请人:ZYMERGEN INC
公开号:WO2020159620A9
公开(公告)日:2020-10-22
[EN] The disclosure discusses chiral dopants for liquid-crystalline materials. Chiral dopants can be bioreachable compounds, i.e., compounds produced from microbes through fermentation. Chiral dopants can also include bioreachable materials that are further modified by chemical synthetic steps. Chiral dopants as discussed herein can include biomolecules such as glycyrrhetinic acid (1), S-narigenin (2), shikimic acid (3), alpha-phellandrene (4), betulin (5), malic acid (6), valencene (7), or nootkatone (8), and any stereoisomers or chemically modified derivatives thereof. The disclosure further shows optical properties of such compounds in a liquid-crystalline material. [FR] La divulgation présente des dopants chiraux pour des matières cristallines liquides. Les dopants chiraux peuvent être des composés "bioatteignables", c'est-à-dire des composés produits à partir de microbes par fermentation. Les dopants chiraux peuvent également comprendre des matières "bioatteignables" qui sont encore modifiées par des étapes synthétiques chimiques. Les dopants chiraux selon l'invention peuvent comprendre des biomolécules telles que l'acide glycyrrhétinique (1), la S-narigénine (2), l'acide shikimique (3), l'alpha-phellandrène (4), la bétuline (5), l'acide malique (6), le valencène (7), ou le nootkatone (8), et tout stéréo-isomère ou ses dérivés chimiquement modifiés. La divulgation présente en outre les propriétés optiques de tels composés dans une matière cristalline liquide.