title: Synthesis, anti-fungal and 1,3-β-D-glucan synthase inhibitory activities of caffeic and quinic acid derivatives.
abstract: New derivatives of caffeic acid and quinic acid were synthesized and their anti-fungal and inhibitory activities on fungal 1,3-β-glucan synthase were determined in comparison with those of the corresponding chlorogenic acid derivatives. All the chlorogenic, quinic and caffeic acid derivatives that were coupled with an H(2)N-orn-4-(octyloxy) aniline group (1, 1b and 1c) displayed potent activities in both anti-fungal and inhibition of 1,3-glucan synthase assays. Compounds 1 and 1c inhibited the fungal membrane enzyme with the potency comparable to that of a known 1,3-β-D-glucan synthase inhibitor, aculeacin A. The results revealed that the anti-fungal activity of the chlorogenic acid derivative with a free amino group was at least partly due to inhibition of the fungal 1,3-β-glucan synthase. These results suggest that further investigation on caffeic acid derivatives may lead to the discovery of novel anti-fungal agents with drug-like properties.
authors.affiliation: College of Life Sciences, Inner Mongolia University, 235 Daxuexilu, Huhhot, Inner Mongolia 010021, China. cmma@imu.edu.cn
authors.forename: Chao-Mei
authors.initials: CM
authors.lastname: Ma
authors.forename: Takashi
authors.initials: T
authors.lastname: Abe
authors.forename: Tadazumi
authors.initials: T
authors.lastname: Komiyama
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Masao
authors.initials: M
authors.lastname: Hattori
authors.forename: Mohsen
authors.initials: M
authors.lastname: Daneshtalab
mesh_terms: D000935:Antifungal Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D002109:Caffeic Acids / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D002176:Candida albicans / Q000187:drug effects*; D004791:Enzyme Inhibitors / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D005964:Glucosyltransferases / Q000037:antagonists & inhibitors* / Q000378:metabolism; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D011801:Quinic Acid / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: D000935:Antifungal Agents; D002109:Caffeic Acids; D004791:Enzyme Inhibitors; D011801:Quinic Acid; D005964:Glucosyltransferases; C020570:1,3-beta-glucan synthase; C040048:caffeic acid