PROBLEM TO BE SOLVED: To provide a new nitrogen-containing heterocyclic compound demonstrating a reliable effect and used safely and a salt thereof, and a fungicide for agricultural and horticultural use containing at least one kind of the compounds as an active ingredient thereof.SOLUTION: A boronic acid derivative represented by formula (VII) and a method for producing the boronic acid derivative are disclosed (wherein Xs each independently represents a 1-20C alkyl group that may have a substituent, a 2-20C alkenyl group that may have a substituent, a 2-20C alkynyl group that may have a substituent, a 3-20C cycloalkyl group that may have a substituent, a 4-20C cycloalkenyl group that may have a substituent, an 8-20C cycloalkynyl group that may have a substituent, a 6-10C aryl group that may have a substituent, a heterocyclic group that may have a substituent, a hydroxy group that may have a substituent, an amino group that may have a substituent, a mercapto group that may have a substituent, a fluorine atom, a chlorine atom or a nitro group and q represents an integer of 0 to 6).COPYRIGHT: (C)2014,JPO&INPIT【課題】効果が確実で安全に使用できる新規含窒素ヘテロ環化化合物及びその塩、及びそれらの化合物の少くも一種を有効成分とする、農園芸用殺菌剤の提供。【解決手段】下記式(VII)で表されるボロン酸誘導体、及びその製造方法。(式中X”は、夫々独立して、置換基を有してもよいC1~20アルキル基、置換基を有してもよいC2~20アルケニル基、置換基を有してもよいC2~20アルキニル基、置換基を有してもよいC3~20シクロアルキル基、置換基を有してもよいC4~20シクロアルケニル基、置換基を有してもよいC8~20シクロアルキニル基、置換基を有してもよいC6~10アリール基、置換基を有してもよいヘテロ環基、置換基を有してもよい水酸基、置換基を有してもよいアミノ基、置換基を有してもよいメルカプト基、フッ素原子、塩素原子又はニトロ基を示す。qは、0~6のいずれかの整数を示す。)【選択図】なし
