1549-77-5

Upstream product

• 96-48-0 4-butanolide 
• 371-41-5 4-Fluorophenol 
• 69687-96-3 4-(4-fluorophenoxy)butyric acid ethyl ester 
• 87411-27-6 3-(3-fluorophenoxy)propanecarboxylic acid 
• 1716-42-3 1-(3-chloropropoxy)-4-fluorobenzene 

Downstream Products

• 1481-34-1 4-(2-bromo-4-fluoro-phenoxy)-butyric acid 
• 774-20-9 7-fluoro-3,4-dihydro-2H-benzo[b]oxepin-5-one 

Relevant academic research and scientific papers

Design, synthesis, and biological evaluation of 3-amino-2-oxazolidinone derivatives as potent quorum-sensing inhibitors of Pseudomonas aeruginosa PAO1

Due to the increasing resistance of Pseudomonas aeruginosa to most clinically relevant antimicrobials, it is challenging to treat bacterial infection with traditional antibiotics. Quorum sensing can regulate the production of biofilms and virulence factors which are closely related to bacterial resistance. Previously we synthesized a series of oxazolidinone compounds targeting the quorum-sensing transcriptional regulatory protein CviR and ZS-12 showed good activity against Chromobacterium violaceum CV026 quorum-sensing. In this study, eighteen 3-amino-2-oxazolidinone compounds were designed and synthesized using ZS-12 as the lead compound. We initially evaluated the inhibitory activities of novel oxazolidinone compounds against QS using C. violaceum CV026 as a reporter strain. Thirteen compounds showed good activities (IC50 range 3.69–63.58 μM) and YXL-13 inhibition was the most significant (IC50 = 3.686 ± 0.5790 μM) against biofilm formation and virulence factors determination of P. aeruginosa PAO1. In vitro, YXL-13 significantly inhibited the formation of PAO1 biofilm (range 42.98%–17.67%), the production of virulence factors (pyocyanin, elastase, rhamnolipid, and protease), and bacterial motility. Moreover, the combination of YXL-13 with an antibiotic (meropenem trihydrate) could significantly improve the antibiotic susceptibility of biofilm P. aeruginosa PAO1 cells. In vivo, YXL-13 significantly prolonged the lifespan of wildtype Caenorhabditis elegans N2 infected by P. aeruginosa PAO1. In conclusion, YXL-13 is a candidate agent for antibiotic-resistant P. aeruginosa PAO1and provides a method for finding new antibacterial drugs.

Synthesis and herbicidal activity of α-[(substituted phenoxybutyryloxy or valeryoxy)]alkylphosphonates and 2-(substituted phenoxybutyryloxy)alkyl-5,5-dimethyl-1,3,2-dioxaphosphinan-2-one containing fluorine

Based on our previous work on the structural modification of the lead compound I, three series of novel fluorine-containing phosphonates derivatives (II, III and IV) were designed and synthesized. Their post-emergence herbicidal activities against some species of weeds were evaluated in a green house. The compounds II were synthesized by introducing of two methylene into the structure I. Compared with the commercial herbicidal clacyfos, compounds II showed moderate herbicidal activity with 60–85% inhibition effect against chingma abutilon (Abutilon theophrasti), common amaranth (Amaranthus retroflexus) and white eclipta (Eclipta prostrate) at a rate of 150 g ai/ha. The compounds III were designed by introducing open-chain phosphonates, which displayed notable herbicidal activity. Especially, the compounds III-1–III-4, III-6, III-8, III-11 and III-12 exhibited significant herbicidal activity (80–100%) comparing to the clacyfos against all tested broadleaf weeds, while compounds IV with five carbon atoms in the carboxylic acid chain were inactive against all of the tested weeds. Structure-activity relationship analyses indicated that the length of the carbon chain had a great effect on the herbicidal activity. Furthermore, a broad spectrum test confirmed that compounds III-4 and III-8 were comparable with glyphosate against all of the tested weeds at a rate of 75 g ai/ha.

Novel pyridopyprimidinone derivatives which are HM74A agonists

The invention is concerned with novel pyridopyrimidinone derivatives of formula (I): wherein R1 to R8, X, Y, m and n are as defined in the description and in the claims. The compounds of the present invention are HM74A agonists with

Discovery and SAR of potent, orally available and brain-penetrable 5,6-dihydro-4H-3-thia-1-aza-benzo[e]azulen- and 4,5-dihydro-6-oxa-3-thia-1-aza- benzo[e]azulen derivatives as neuropeptide Y Y5 receptor antagonists

Combination of structural elements from a potent Y5 antagonist (2) with thiazole fragments that exhibit weak Y5 affinities followed by lead optimisation led to the discovery of (5,6-dihydro-4H-3-thia-1-aza-benzo[e]azulen-2-yl)- piperidin-4-ylmethyl-amino and (4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-2- yl)-piperidin-4-ylmethyl-amino derivatives. Both classes of compounds are capable of delivering potent and selective orally and centrally bioavailable NPY Y5 receptor antagonists.

Polyhydroxyalkanoate, method for production thereof and microorganisms for use in the same

A polyhydroxyalkanoate having a monomer unit composition represented by General Formula (1):AmB(1-m) ???wherein A is represented by General Formula (2), B is at least one selected from the group consisting of monomer units represente