Microwave‐associate synthesis of Co
<sub>3</sub>
O
<sub>4</sub>
nanoparticles as an effcient nanocatalyst for the synthesis of arylidene barbituric and Meldrum's acid derivatives in green media
作者:Mahdieh Yahyazadehfar、Enayatollah Sheikhhosseini、Sayed Ali Ahmadi、Dadkhoda Ghazanfari
DOI:10.1002/aoc.5100
日期:——
conditions using controlled, effective, and facile microwave method. The final nanostructures were characterized by SEM, XRD, and TEM analyses. The products had a small size distribution, homogeneous morphology, and crystallographic structures associated with the formation of Co3O4 nanostructures. Moreover, EDS mapping analysis confirmed the existence of Co and O elements in the final structure, and the
在这项研究中,使用可控,有效且简便的微波方法,在环境适宜的条件下构建了Co 3 O 4纳米催化剂。通过SEM,XRD和TEM分析来表征最终的纳米结构。产物具有较小的尺寸分布,均匀的形态和与Co 3 O 4形成相关的晶体结构纳米结构。此外,EDS作图分析证实了最终结构中存在Co和O元素,并通过VSM研究了样品的磁性。此纳米结构中的催化方法中的应用进一步检查,结果表明,它可作为一种新的候选为亚芳基巴比妥和麦德鲁姆的合成, s至由巴比妥和麦德鲁姆醛的Knoevenagel缩合酸, S酸性中水性介质。这些纳米催化剂的高产率将由纳米结构的性质以及本研究开发的实验程序来证明,这影响了产物的理化特性。
NOVEL COMPOUND HAVING SKIN-WHITENING, ANTI-OXIDIZING AND PPAR ACTIVITIES AND MEDICAL USE THEREFOR
申请人:Chung Hae Young
公开号:US20140023603A1
公开(公告)日:2014-01-23
Provided are a novel compound having skin-whitening, anti-oxidizing and PPAR activities and a medical use thereof, and the compound has skin-whitening activities for the suppression of tyrosinase, and accordingly, is useful for use in skin-whitening pharmaceutical composition or cosmetic products; has anti-oxidant activities, and accordingly, is useful for the prevention and treatment of skin-aging; and has PPAR activities, and in particular, PPARα and PPARγ activities, and accordingly, is useful for use in pharmaceutical compositions or health foods which are effective for the prevention and treatment of obesity, metabolic disease, or cardiovascular disease.
Organic synthesis by Twin Screw Extrusion (TSE): continuous, scalable and solvent-free
作者:Deborah E. Crawford、Clodagh K. G. Miskimmin、Ahmad B. Albadarin、Gavin Walker、Stuart L. James
DOI:10.1039/c6gc03413f
日期:——
Several organic reactions have been achieved quantitatively without any added solvent, using solid or liquid reagents, on a continuous basis; products are typically obtained directly in analytically pure form, requiring no work-up.
A Systematic Study on Knoevenagel Reaction and Nazarov Cyclization of Less Reactive Carbonyl Compounds Using Rare Earth Triflates and Its Applications
作者:A. Ilangovan、S. Muralidharan、S. Maruthamuthu
DOI:10.5012/jkcs.2011.55.6.1000
日期:2011.12.20
A systematic study of Knoevenagel reaction and Nazarov cyclization was made on variety of less reactive carbonyl compounds such as $\beta}$-ketoesters, 1,3-diketones and cyclic active methylene compounds using $Yb(OTf)_3$ as the catalyst. Recycling study confirms reusability of the catalyst without much loss of activity.
申请人:Pusan National University Industry-University Cooperation Foundation 부산대학교 산학협력단(220040044843) BRN ▼621-82-06530
公开号:KR101677122B1
公开(公告)日:2016-11-17
본 발명은 피부미백, 항산화 및 PPAR 활성을 갖는 신규 화합물 및 이의 의학적 용도에 관한 것으로, 본 발명에 따른 화합물들은 티로시나아제를 억제하는 피부미백 활성을 지니므로 피부미백용 약학조성물 또는 화장품에 유용하게 사용될 수 있고, 항산화 활성을 지니므로 피부노화 등의 예방 또는 치료에 유용하게 사용될 수 있으며, 또한 PPAR 활성 특히, PPARα 및 PPARγ 활성을 지니므로 비만, 대사성 질환 또는 심혈관계 질환을 예방하고 치료하는 데에 유용한 약학조성물 또는 건강식품으로 사용될 수 있다.