[EN] CONDENSED ISOXAZOLINE DERIVATIVES AND THEIR USE AS HERBICIDES<br/>[FR] DÉRIVÉS D'ISOXAZOLINE CONDENSÉS ET LEUR UTILISATION COMME HERBICIDES
申请人:BASF SE
公开号:WO2021224040A1
公开(公告)日:2021-11-11
The invention relates to compounds of formula (I), and their use as herbicides. In said formula, R1 to R6 represent groups such as hydrogen, halo-gen or organic groups such as alkyl, alkenyl, alkynyl, or alkoxy; W is a bicyclic heterocycle; X is a bond or a divalent unit; Y is hydrogen, cyano, hydroxyl or a linear or cyclic organic group. The invention further refers to a composition comprising such compound and to the use thereof for controlling unwanted vegetation.
A General Route to Cyclopeptide Alkaloids: Total Syntheses and Biological Evaluation of Paliurines E and F, Ziziphines N and Q, Abyssenine A, Mucronine E, and Analogues
A full account of the total syntheses of the cyclopeptidealkaloids paliurine E and F, ziziphine N and Q, abyssenine A, and mucronine E is provided. A key feature of the syntheses involves an intramolecular amidation of a vinyl iodide, which allows us simultaneously to address two synthetic challenges associated with cyclopeptidealkaloids: the formation of the enamide and macrocyclization. We also
提供了环肽生物碱 paliurine E 和 F、ziziphine N 和 Q、abyssenine A 和 mucronine E 的全合成的完整说明。合成的一个关键特征涉及乙烯基碘的分子内酰胺化,这使我们能够同时解决与环肽生物碱相关的两个合成挑战:烯酰胺的形成和大环化。我们还记录了其他策略在大环化步骤中的使用,以及对获得的天然产物和类似物的抗菌和细胞毒性特性的评估。
Bicyclic Pyrrolidines for Medicinal Chemistry via [3 + 2]-Cycloaddition
作者:Vladimir I. Savych、Vladimir L. Mykhalchuk、Pavlo V. Melnychuk、Andrii O. Isakov、Taras Savchuk、Vadim M. Timoshenko、Sergiy A. Siry、Sergiy O. Pavlenko、Dmytro V. Kovalenko、Oleksandr V. Hryshchuk、Vitalii A. Reznik、Bohdan A. Chalyk、Vladimir S. Yarmolchuk、Eduard B. Rusanov、Pavel K. Mykhailiuk
DOI:10.1021/acs.joc.1c01327
日期:2021.10.1
A general approach to bicyclic fused pyrrolidines via [3 + 2]-cycloaddition between nonstabilized azomethyne ylide and endocyclic electron-deficient alkenes was elaborated. “Push–pull” alkenes and CF3-alkenes did not react with the azomethyne ylide under the previously reported conditions, and we developed a superior protocol (LiF, 140 °C, no solvent). Among obtained products were medchem-relevant
Non-protein amino acids (2R,3R)- and (2R,3S)-3-fluoroprolines were synthesized as novel probes for studying the cis/trans isomerization of the amino acylproline peptide bond. The N-Boc-protected target compounds were obtained as opticallypure material starting from (2S,3S)-3-hydroxyproline.
Catalytic Asymmetric Hydrogenation of Heteroarenes and Arenes
作者:Ryoichi Kuwano
DOI:10.1080/10426507.2014.974752
日期:2015.6.3
ruthenium-catalyzed hydrogenation of various azoles to proceed with high enantioselectivity. The PhTRAP–ruthenium catalyst transformed indoles, pyrroles, imidazoles, and oxazoles into the corresponding chiral heterocycles. Naphthalenes are also reduced with hydrogen by the chiral ruthenium catalyst, exclusively giving tetralins. Some 2-alkoxytetralins were obtained with over 90% ee from the catalyticasymmetric hydrogenation
图形摘要 摘要 转螯合手性双膦 PhTRAP 允许钌催化的各种唑类氢化反应以高对映选择性进行。PhTRAP-钌催化剂将吲哚、吡咯、咪唑和恶唑转化为相应的手性杂环。萘也被手性钌催化剂用氢还原,专门得到四氢化萘。从相应的取代萘的催化不对称氢化中获得了一些具有超过 90% ee 的 2-烷氧基四氢化萘。