米国特許 Method of Producing an Alkoxyflavone Derivative

発明の名称

Method of Producing an Alkoxyflavone Derivative

特許権者

Tokiwa Phytochemical Co., Ltd

発明者

Jin Tatsuzaki
Tsutomu Ishikawa

特許番号

US 10,889,557

出願日

2019年12月26日

登録日

2021年1月12日

要約

A method of producing an alkoxyflavone derivative involves a step of reacting hydroxyflavone derivative which is shown in the below chemical formula and dialkyl sulfate in the presence of dimethyl sulfoxide and an alkali hydroxide. Futher, in the chemical formula below, R11-R14, R21-R25 and R3 are independently one of hydrogen, hydroxyl group, ester group, alkoxy group, alkylenedioxy group, sulfonyl group and alkyl group, respectively. However, at least two of  R21-R25 and R3 are hydroxyl groups.