Cordyanhydrides A and B, two new alkenoic acids bearing two and three maleic anhydride moieties in the linear acid chain, were isolated and identified from a culture broth of the insect pathogenic fungus Cordyceps pseudomilitaris BCC 1620. (C) 2000 Elsevier Science Ltd. All rights reserved.
Polyenepolycarboxylic acids, derivatives thereof with respect to carboxyl groups, or salts of these
申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US06372943B1
公开(公告)日:2002-04-16
Polyenepolycarboxylic acids represented by the following formula (1);
(wherein n represents an integer of 0 to 5 and m represents an integer of 1 or 2, provided m is 1 when n is 0), or derivatives thereof at their carboxyl group(s) or their salts.
The above compounds originate from natural products and are capable of exhibiting excellent dispersing ability.
A new maleicanhydridederivative 1 (FR222398) was isolated from fermentations with the fungus Talaromyces sp. No. 10092. The structure of 1 was determined based on spectroscopic analysis and chemical conversion. The sodium salt of 1 exhibited a dispersant activity toward kaolin suspension.