137344-86-6

Upstream product

• 22929-52-8 tetrahydrofuran-3-one 
• 74-86-2 acetylene 
• 4301-14-8 acetylenemagnesium bromide 

Relevant academic research and scientific papers

Ligand-Controlled Palladium-Catalyzed Carbonylation of Alkynols: Highly Selective Synthesis of α-Methylene-β-Lactones

The first general and regioselective Pd-catalyzed cyclocarbonylation to give α-methylene-β-lactones is reported. Key to the success for this process is the use of a specific sterically demanding phosphine ligand based on N-arylated imidazole (L11) in the presence of Pd(MeCN)2Cl2 as pre-catalyst. A variety of easily available alkynols provide under additive-free conditions the corresponding α-methylene-β-lactones in moderate to good yields with excellent regio- and diastereoselectivity. The applicability of this novel methodology is showcased by the direct carbonylation of biologically active molecules including natural products.

Substituted alkynyl pyridine compounds and methods of use thereof, and use thereof

The invention provides a substituted alkynylpyridine compound with a structure represented by a formula (I) as described in the specification and a pharmaceutically acceptable salt and a medicinal preparation thereof. The compound is used for adjusting activity of protein kinase and adjusting intercellular or intracellular signal response. The invention also relates to a pharmaceutical composition including the compound provided by the invention and a method of applying the pharmaceutical composition in treating mammals, especially in treating highly proliferative diseases of the mankind.

SUBSTITUTED ALKYNYL PYRIDINE COMPOUNDS AND METHODS OF USE

The present invention provides novel substituted alkynyl pyridine compounds, pharmaceutical acceptable salts and formulations thereof useful in modulating the protein tyrosine kinase activity, and in modulating cellular activities such as proliferation, differentiation, apoptosis, migration and invasion. The invention also provides pharmaceutically acceptable compositions comprising such compounds and methods of using the compositions in the treatment of hyperproliferative disorders in mammals, especially humans.

DERIVATIVES OF 7-ALKYNYL-1,8-NAPHTHYRIDONES, PREPARATION METHOD THEREOF AND USE OF SAME IN THERAPEUTICS

The disclosure relates to 7-alkynyl-1,8-naphthyridones of formula (I): wherein R1, R2, R3, and R4 are as defined in the disclosure, to compositions containing them, to processes for preparing them, and to their use in therapeutics.

Diacetone glucose architecture as a chirality template I. Crucial effects of the intramolecular oxygens upon the LiAlH4 reduction of the propargyl alcohol of 3-C-ethynyl-1,2:5,6-di-O-isopropylidene-α-D-allofuranose derivatives

The facile as well as regio- and stereoselective reactivity of 3-C-ethynyl-1,2:5,6-di-O-isopropylidene-α-D-allofuranose derivatives for LiAlH4 reduction into the corresponding ethenyl derivatives were investigated. The effect of oxygen atoms on the reduction is discussed by means of semi-empirical MO calculation.