interest are the macrocyclic bismalonates, as they show pronounced crystallisability and arrange into columnar motifs in the solid state. They feature distinctive dihedral angles: all ester moieties adopt anti conformations whereas the planes of the carboxy moieties of each malonate residue arrange in an approximately orthogonal fashion. The latter geometry is enforced by the macrocyclic structures, as
Acylated citrate esters are made with a polishing step that includes contact with a polishing composition having a fatty acid absorbent to remove residual odor-forming precursors from the resulting acylated ester.
Synthesis and characterization of some atypical sphingoid bases
作者:Essa M. Saied、Thuy Linh-Stella Le、T. Hornemann、Christoph Arenz
DOI:10.1016/j.bmc.2018.06.031
日期:2018.8
of appropriate internal standards for quantification. Herein we describe the synthesis of a variety of 1-deoxy-sphingoid bases. 1-DeoxySphingolipids have recently acquired significant attention due to its pathological role in the rare inherited neuropathy, HSAN1 but also as predictive biomarkers in diabetes type II. Some of the compounds synthesized and characterized herein, have been used and will
First Total Synthesis of the Irciniasulfonic Acids
作者:Adrian P. Dobbs、Alberto Venturelli、Laura A. Butler、Robert J. Parker
DOI:10.1055/s-2005-862387
日期:——
A flexible and concise first total synthesis of the irciniasulfonic acids is reported.
报道了一种灵活而简洁的irciniasulfonic酸的全合成方法。
[EN] ISOXAZOLINE DERIVATIVES AS INSECTICIDAL COMPOUNDS<br/>[FR] DÉRIVÉS D'ISOXAZOLINE EN TANT QUE COMPOSÉS INSECTICIDES
申请人:SYNGENTA PARTICIPATIONS AG
公开号:WO2013026695A1
公开(公告)日:2013-02-28
The present invention provides compounds of formula (I) wherein G1 is oxygen; R1 is hydrogen; R2 is group P, L is a bond, methylene or ethylene; one of A1 and A2 is S, SO or SO2 and the other is -C(R4)R4-; R3 is hydrogen or methyl; each R4 is independently hydrogen or methyl; Y1, Y2 and Y3 are independently CH or nitrogen; wherein no more than two of Y1, Y2 and Y3 are nitrogen and wherein Y2 and Y3 are not both nitrogen; R5 is chloro, bromo, fluoro; X2 is C-X6 or nitrogen; Χ1, Χ3 and X6 are independently hydrogen, halogen or trihalomethyl, wherein at least two of X1, X3 and X6 are not hydrogen; X4 is trifluoromethyl, difluoromethyl or chlorodifluoromethyl. The invention also relates to methods of using the compounds to control insects, acarines, nematodes or molluscs, as well as intermediates usefor the the sysnthesis of the compounds.