摘要:
To provide dioctatin derivatives, a production process thereof, an aflatoxin production inhibitor containing the dioctatin derivative, and a method of controlling aflatoxin contamination by use of the aflatoxin production inhibitor containing the dioctatin derivative. The present invention provides dioctatin derivatives represented by the following Structural Formula (I): where R1 and R2 each represent CH3—(CH2)n—, (CH3)2CH—CH2— or C6H5—CH2—; n represents an integer of 2 to 6; X1 and X2 each represent CH3 or hydrogen atom; and Y represents 2-amino-2-butenoic acid or amino acid residue, with compounds where R1 and R2 are each CH3(CH2)4—, X2 is a hydrogen atom and Y is 2-amino-2-butenoic acid being excluded.
摘要:
The present invention relates to provide an aflatoxin production inhibitor that inhibits aflatoxin production specifically and efficiently, is highly safe, and is practical, and an efficient production method thereof; and a method for controlling aflatoxin contamination that uses the aflatoxin production inhibitor, specifically relating to an aflatoxin production inhibitor that includes at least one of a dioctatin represented by the following formula (I) and a derivative thereof, as an active ingredient: where, in the formula (I), R represents one of hydrogen and a methyl group.
摘要:
The present invention relates to provide an aflatoxin production inhibitor that inhibits aflatoxin production specifically and efficiently, is highly safe, and is practical, and an efficient production method thereof; and a method for controlling aflatoxin contamination that uses the aflatoxin production inhibitor, specifically relating to an aflatoxin production inhibitor that includes at least one of a dioctatin represented by the following formula (I) and a derivative thereof, as an active ingredient: where, in the formula (I), R represents one of hydrogen and a methyl group.
摘要:
An object of the present invention is to provide an aflatoxin production inhibitor that inhibits aflatoxin production specifically and efficiently, is highly safe, and is practical, and an efficient production method thereof; and a method for controlling aflatoxin contamination that uses the aflatoxin production inhibitor.Specifically, the present invention relates to an aflatoxin production inhibitor that includes at least one of a dioctatin represented by the following formula (I) and a derivative thereof, as an active ingredient: where, in the formula (I), R represents one of hydrogen and a methyl group. The present invention also relates to a method for producing an aflatoxin production inhibitor in which dioctatin is prepared: by a method including culturing a dioctatin-producing microorganism, and at least one of separating and purifying dioctatin from a culture obtained, by centrifugal liquid liquid partition chromatography; or by chemical synthesis. Further, the present invention relates to a method for controlling aflatoxin contamination that includes using the aflatoxin production inhibitor to thereby inhibit aflatoxin production by an aflatoxin-producing microorganism.
摘要:
An antifungal compound, demethylallosamidin, represented by the formula: ##STR1## is disclosed. Methods of production and antifungal compositions comprising demethylallosamidin are also provided.
摘要:
Novel allosamidin compounds, AJI9463A, AJI9463B and AJI9463C, represented by the following structural formula (1): ##STR1## wherein R.sub.1 and R.sub.2 are hydrogen and R.sub.3 is hydroxy (AJI9463A); R.sub.1 and R.sub.3 are hydrogen and R.sub.2 is hydroxy (AJI9463B); and R.sub.1 is methyl, R.sub.2 is hydroxy and R.sub.3 is hydrogen (AJI9463C), exhibit extremely potent inhibitory activity against chitinases from a number of sources, particularly from Candida albicans, and can be utilized as potent antifungal agents and chitinase inhibitors. Pseudo disaccharide compounds, obtained by partial hydrolysis of these compounds with an acid, also show potent inhibitory activity against chitinase, and can be utilized as antifungal agents and chitinase inhibitors.
摘要:
An antifungal compound, demethylallosamidin, represented by the formula: ##STR1## is disclosed. Methods of production and antifungal compositions comprising demethylallosamidin are also provided.