Alkylation of ethyl bromomalonate by alkylcobaloximes
作者:M. Veber、K.N.V. Duong、F. Gaudemer、A. Gaudemer
DOI:10.1016/s0022-328x(00)92348-9
日期:1979.9
Allylcobaloximes react under very mild conditions with ethyl bromomalonate to yield allyl-substituted ethylmalonates in good yield. In the case of crotyl-, 3,3 dimethyl, allyl- and cinnamyl-cobaloximes, the substitution occurs with total rearrangement of the allyl groups. Similar rearrangements are observed during the reactions of propargyl- and allenylcobaloximes with BrCH(CO2Et)2 yielding allenyl-
Mechanistic Insights into the Ru(II)-Catalyzed Intramolecular Formal [3 + 2] Cycloaddition of (<i>E</i>)-1,6-Enynes
作者:Rui Liu、Yajie Chou、Bing Lian、De-cai Fang、Ming Gao、Tanyu Cheng、Guohua Liu
DOI:10.1021/acs.orglett.9b02446
日期:2019.9.6
challenge in organic chemistry. Herein, we report a Ru(II)-catalyzed formal [3 + 2] cycloaddition as an efficient method to prepare unprecedented bicyclo[3.3.0]octenes from readily available (E)-1,6-enynes. Mechanistic studies based on the deuterium labeling experiments and the DFT calculation disclose a reasonable mechanistic pathway, where a ruthenacyclopentene generated by an ene-yne oxidative cyclization
NITROGEN-CONTAINING HETEROCYCLIC COMPOUND OR SALT THEREOF
申请人:FUJIFILM Corporation
公开号:US20150045339A1
公开(公告)日:2015-02-12
The object is to provide an Fms-like tyrosine kinase 3 (FLT3) inhibitor useful as a therapeutic agent for acute myeloid leukemia (AML). A novel nitrogen-containing heterocyclic compound represented by the general formula [1] or a salt thereof is provided. The compound or a salt thereof of the present invention can be used as an active ingredient of a pharmaceutical composition for a treatment of a disease or condition relating to FLT3, such as acute myeloid leukemia (AML) and acute promyelocytic leukemia (APL).
[EN] PROTEIN KINASE C AGONISTS<br/>[FR] AGONISTES DE PROTÉINE KINASE C
申请人:GILEAD SCIENCES INC
公开号:WO2020176505A1
公开(公告)日:2020-09-03
The present disclosure relates generally to certain diacylglycerol lactone compounds, pharmaceutical compositions comprising said compounds, and methods of making and using said compounds and pharmaceutical compositions. The compounds and compositions disclosed herein may be used for the treatment or prevention of diseases, disorders, or infections modifiable by protein kinase C (PKC) agonists, such as HIV.
alkyne proceeds smoothly at room temperature to afford highly substituted five-membered cycliccompounds featuring a 1,5-enyne motif. Deuterium-labeling experiments showed that the key ruthenacyclopentene intermediate undergoes cleavage of metal–carbon bonds through the metal-assisted σ-bond metathesis reaction, thus leading to the formation of C(sp2)–H and C(sp3)–C(sp) bonds.