41014-43-1Relevant academic research and scientific papers
Polarized ketene dithioacetals-versatile synthons for different heterocycles
Venkatesh,Premakumari,Padmaja,Padmavathi
, p. 1886 - 1892 (2012)
The reactivity of polarized ketene dithioacetals to develop a variety of heterocycles under different conditions was studied.
The reactivity of gem cyanoester ketene dithiolates towards the development of potent antioxidant heterocycles
Padmavathi, Venkatapuram,Venkatesh, Bhumireddy Chinnachennaiahgari,Muralikrishna, Akkarapalli,Padmaja, Adivireddy
, p. 449 - 458 (2012)
The reactivity of gem cyanoester ketene dithiolates towards the development of a variety of heterocycles was studied and tested for antioxidant property. The compounds bis benzoxazolylmethylthiomethylene pyrazoles and isoxazoles displayed excellent radical scavenging activity when compared with the standard ascorbic acid.
Synthesis and antioxidant activity of a new class of bis and tris heterocycles
Padmavathi, Venkatapuram,Venkatesh, Bhumireddy Chinnachennaiahgari,Muralikrishna, Akkarapalli,Padmaja, Adivireddy
, p. 745 - 752 (2012)
A series of novel heterocycles, bisbenzoxazolyl/benzothiazolyl/ benzimidazolyl pyrazoles/isoxazoles/pyrimidines were synthesized and evaluated for their antioxidant activity. The bisbenzoxazolylisoxazole 10 exhibited good antioxidant activity when compared with the standard ascorbic acid.
Exploring Steric Effects of Zinc Complexes Bearing Achiral Benzoxazolyl Aminophenolate Ligands in Isoselective Polymerization of rac-Lactide
Hu, Jianwen,Kan, Chao,Ma, Haiyan
, p. 11240 - 11251 (2018)
A series of tridentate achiral benzoxazolyl-based aminophenolate zinc complexes, LZnN(SiMe3)2 (L = 2-{[benzoxazoly-CH2N(R3)-]CH2}-6-R1-4-R2-C6H2O, R1/
Excited-state intramolecular single and double proton transfer emission of 2,5-bis(benzoxazol-2-yl)thiophene-3,4-diol
Hao, Yongchao,Chen, Yi
, p. 186 - 190 (2016)
In this work, excited-state intramolecular single proton transfer emission (S-PTE) and double proton transfer emission (D-PTE) are presented by employing 2,5-bis(benzoxazol-2-yl)thiophene-3,4-diol (1) as a prototype. 1 has been strategically designed and synthesized in an aim to explore single proton transfer and double proton transfer in the excited state. In solution 1 exhibits the lowest lying S0 → S1 absorption at ~395 nm. Upon excitation, two large Stokes shifted emission bands maximized at 475 nm and 550 nm are resolved, which are ascribed to the tautomer emission resulting from single proton transfer and double proton transfer isomers, respectively. It is found that solvents have greatly influenced on excited-state intramolecular proton transfer emission.
COMPOUNDS HAVING PDE9A INHIBITORY ACTIVITY, AND PHARMACEUTICAL USES THEREOF
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Paragraph 0097-0098, (2021/10/15)
The present invention provides a compound having a specific chemical structure and having PDE9A inhibitory activity, or a pharmaceutically acceptable salt thereof. The present invention provides a composition containing the compound or a pharmaceutically acceptable salt thereof. The present invention provides a pharmaceutical use, for treating or preventing PDE9A-related diseases, of the compound according to the present invention, a salt thereof, and a composition containing the compound or salt. The present invention also provides a method for treating or preventing PDE9A-related diseases, the method comprising administering an effective amount of the compound according to the present invention, a salt thereof, or a composition containing the compound or salt to a subject in need of treatment.
Benzoxazole derivative and preparation method and application thereof
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Paragraph 0062-0065, (2019/04/17)
The invention provides a benzoxazole derivative and a preparation method and application thereof. Studies discover that the benzoxazole derivative provided herein has good P2Y14 inhibitory activity and anti-inflammatory activity, and is suitable for the p
Anti-oligomerization sheet molecules: Design, synthesis and evaluation of inhibitory activities against α-synuclein aggregation
Liu, Hao,Chen, Li,Zhou, Fei,Zhang, Yun-Xiao,Xu, Ji,Xu, Meng,Bai, Su-Ping
supporting information, p. 3089 - 3096 (2019/06/14)
Aggregation of α-synuclein (α-Syn) play a key role in the development of Parkinson Disease (PD). One of the effective approaches is to stabilize the native, monomeric protein with suitable molecule ligands. We have designed and synthesized a series of sheet-like conjugated compounds which possess different skeletons and various heteroatoms in the two blocks located at both ends of linker, which have good π-electron delocalization and high ability of hydrogen-bond formation. They have shown anti-aggregation activities in vitro towards α-Syn with IC50 down to 1.09 μM. The molecule is found binding in parallel to the NACore within NAC domain of α-Syn, interfering aggregation of NAC region within different α-Syn monomer, and further inhibiting or slowing down the formation of α-Syn oligomer nuclei at lag phase. The potential inhibitor obtained by our strategy is considered to be highly efficient to inhibit α-Syn aggregation.
Synthesis of Benzazolyl Pyrimidines Under Ultrasonication and Their Antimicrobial Activity
Kayathi, Narendra Babu,Sowmya, Donthamsetty V.,Adivireddy, Padmaja,Venkatapuram, Padmavathi
, p. 1024 - 1032 (2018/02/21)
(1) The benzoxazolyl/benzothiazolyl/benzimidazolyl pyrimidines were prepared under ultrasonication in the presence of pyridine/dimethylaminopyridine and triethylamine. (2) Better yields were recorded in 4-(N,N-dimethylamino)pyridine and Et3N. (3) The presence of electron withdrawing chloro, bromo, and nitro substituents enhanced antimicrobial activity (13c, 13e, 14e: minimum inhibitory concentration?=?6.25?μg/well against Bacillus subtilis; 13e, 14e: minimum inhibitory concentration?=?6.25?μg/well against Aspergillus niger).
Synthesis, antifungal activities and molecular docking studies of benzoxazole and benzothiazole derivatives
Luo, Bo,Li, Ding,Zhang, An-Ling,Gao, Jin-Ming
, (2018/10/05)
Based on benzoxazole and benzothiazole scaffold as an important pharmacophore, two series of 2-(aryloxymethyl) benzoxazole and benzothiazole derivatives were synthesized and their antifungal effects against eight phytopathogenic fungi were evaluated. Compounds 5a, 5b, 5h, and 5i exhibited significant antifungal activities against most of the pathogens tested. Especially 5a, 5b, 5h, 5i, 5j, and 6h inhibited the growth of F. solani with IC50 of 4.34–17.61 μg/mL, which were stronger than that of the positive control, hymexazol (IC50 of 38.92 μg/mL). 5h was the most potent inhibitor (IC50 of 4.34 μg/mL) against F. Solani, which was about nine times more potent than hymexazol. Most of the test compounds displayed significant antifungal effects against B. cinerea (IC50 of 19.92–77.41 μg/mL), among them, 5a was the best one (IC50 of 19.92 μg/mL). The structure-activity relationships (SARs) were compared and analyzed. The result indicates that the electron-drawing ability and position of the substituents have a significant impact on biological activities. Furthermore, docking studies were carried out on the lipid transfer protein sec14p from S. cerevisiae, and preliminarily verified the antifungal activities. Taken together, these results provide 2-(phenoxymethyl)benzo[d]oxazole as an encouraging framework that could lead to the development of potent novel antifungal agents.
