基于结构-活性关系 乙恶唑设计并合成了一系列的2-(2,6-二氟苯基)-4-(4-取代的苯基)-1,3-恶唑啉4a-y和苯甲酰基苯基脲。发现大多数这些化合物显示出优异的杀螨活性。当浓度为2.5 mg L -1时,它们对蜘蛛螨的卵和幼虫的死亡率都达到85%以上。一些化合物还表现出优异的杀虫活性。2,4-二苯基-1,3-恶唑啉的4-苯基上的取代基的位置和类型对活性有很大影响。2-(2,6-二氟苯基)-4-(2-Cl-4-(4-Cl-苯氧基)苯基)-1,3-恶唑啉(4r)在2.5 mg L -1下表现出100%的杀螨作用,对甜菜夜蛾和小菜蛾的死亡率分别为12.5 mg L -1和65%和93%,几乎与乙恶唑。新发现的结构-活性关系也可能有益于进一步的杀螨剂/杀虫剂开发。
The conversion of cyclohexanone and substituted cyclohexanones to alkylarylethersusing a Pd/C-ethylene system is discussed, where ethylene functions as a hydrogen acceptor. The obtained ethers are easily transformed into the corresponding phenols by treatment with BBr3. Direct conversion of cyclohexenone to phenol in the presence of a catalytic amount of Pd/C under an ethylene atmosphere is also
Copper Catalyzed sp<sup>3</sup> C–H Etherification with Acyl Protected Phenols
作者:Tolani K. Salvador、Charles H. Arnett、Subrata Kundu、Nicholas G. Sapiezynski、Jeffery A. Bertke、Mahdi Raghibi Boroujeni、Timothy H. Warren
DOI:10.1021/jacs.6b09057
日期:2016.12.28
A variety of acyl protected phenols AcOAr participate in sp3 C-H etherification of substrates R-H to give alkyl aryl ethers R-OAr employing tBuOOtBu as oxidant with copper(I) β-diketiminato catalysts [CuI]. Although 1°, 2°, and 3° C-H bonds may be functionalized, selectivity studies reveal a preference for the construction of hindered, 3° C-OAr bonds. Mechanistic studies indicate that β-diketiminato
[EN] METHOD AND APPARATUS FOR THE SYNTHESIS OF DIHYDROARTEMISININ AND ARTEMISININ DERIVATIVES<br/>[FR] PROCÉDÉ ET APPAREIL DE SYNTHÈSE DE DIHYDROARTÉMISININE ET DE DÉRIVÉS D'ARTÉMISININE
申请人:MAX PLANCK GES ZUR FÖRDERUNG DER WISSENSCHAFTEN E V
公开号:WO2015007693A1
公开(公告)日:2015-01-22
The present invention is directed to a method for continuous production of dihydroartemisinin and also artemisinin derivatives derived from dihydroartemisinin by using artemisinin or dihydroartemisinic acid (DHAA) as starting material as well as to a continuous flow reactor for producing dihydroartemisinin as well as the artemisinin derivatives. It was found that the reduction of artemisinin to dihydroartemisinin in a continuous process requires a special kind of reactor and a special combination of reagents comprising a hydride reducing agent, at least one activator such as an inorganic activator, at least one solid base, at least one aprotic solvent and at least one C1-C5 alcohol.
[Object]
To provide a GPR40 activating agent containing, as an active ingredient, a novel compound having a GPR40 agonist action, a salt of the compound, a solvate of the compound or the salt, or the like, particularly, an insulin secretagogue and a prophylactic and/or therapeutic agent against diabetes, obesity, or other diseases.
[Means of Solving the Problem]
A compound of Formula (I):
(where p is 0 to 4; j is 0 to 2; k is 0 to 1; a ring A is an aryl group, a heterocyclic group, a cycroalkyl group, a cycroalkenyl group, a spirocyclic group; a ring B is an aryl group, a heteroaryl group; X is 0 or —NR
7
—; and R
1
to R
7
and L are specific groups), a salt of the compound, or a solvate of the compound or the salt.
Method and apparatus for the synthesis of dihydroartemisinin and artemisinin derivatives
申请人:Max-Planck-Gesellschaft zur Förderung
der Wissenschaften e.V.
公开号:EP2826779A1
公开(公告)日:2015-01-21
The present invention is directed to a method for continuous production of dihydroartemisinin and also artemisinin derivatives derived from dihydroartemisinin by using artemisinin or dihydroartemisinic acid (DHAA) as starting material as well as to a continuous flow reactor for producing dihydroartemisinin as well as the artemisinin derivatives. It was found that the reduction of artemisinin to dihydroartemisinin in a continuous process requires a special kind of reactor and a special combination of reagents comprising a hydride reducing agent, at least one activator such as an inorganic activator, at least one solid base, at least one aprotic solvent and at least one C1-C5 alcohol.