Wednesday, April 4, 2018

Thioacetalization


O. Kölln and H. Redlich, Synthesis, 1995, 1995, 1383–1388.


Thursday, March 2, 2017

Zeta potential - wiki

Zeta potential is a scientific term for electrokinetic potential in colloidaldispersions. In the colloidal chemistry literature, it is usually denoted using the Greek letter zeta (ζ), hence ζ-potential. From a theoretical viewpoint, the zeta potential is the electric potential in the interfacial double layer (DL) at the location of the slipping plane relative to a point in the bulk fluid away from the interface.











Further reading:

Density Functional Theory (DFT) - wiki

Density functional theory (DFT) is a computational quantum mechanical modelling method used in physicschemistry and materials science to investigate the electronic structure (principally the ground state) of many-body systems, in particular atoms, molecules, and the condensed phases













Further reading:

[B] Density functional theory

[C] Density functional theory

[HTML] Density functional theory

Monday, February 13, 2017

Hit to lead (H2L) - wiki

Hit to lead (H2L) also known as lead generation is a stage in early drug discovery where small molecule hits from a high throughput screen (HTS) are evaluated and undergo limited optimization to identify promising lead compounds.[1][2] These lead compounds undergo more extensive optimization in a subsequent step of drug discovery called lead optimization (LO).[3][4] The drug discovery process generally follows the following path that includes a hit to lead stage:







Further reading:

Hit and lead generation: beyond high-throughput screening

[HTML] Hit discovery and hit-to-lead approaches

[HTML] Hit-to-lead studies: the discovery of potent adamantane amide P2X 7 receptor antagonists



Abamectin - wiki


Abamectin is a widely used insecticide and anthelmintic.
Abamectin is a mixture of avermectins containing more than 80% avermectin B1a and less than 20% avermectin B1b. These two components, B1a and B1b have very similar biological and toxicological properties. The avermectins are insecticidal and antihelmintic compounds derived from various laboratory broths fermented by the soil bacterium Streptomyces avermitilis. Abamectin is a natural fermentation product of this bacterium.
Abamectin
Avermectins.png








The Morita-Baylis-Hilman reaction - wiki

The Baylis–Hillman reaction is a carbon-carbon bond forming reaction between the α-position of an activated alkene and an aldehyde, or generally a carbon electrophile. Employing a nucleophilic catalyst, such as tertiary amine and phosphine, this reaction provides a densely functionalized product (e.g. functionalized allyl alcohol in the case of aldehyde as the electrophile). This reaction is also known as the Morita–Baylis–Hillman reaction or MBH reaction. It is named for the Japanese chemist Ken-ichi Morita, the British chemist Anthony B. Baylis and the German chemist Melville E. D. Hillman.





Links:

Further reading:

The Catalyzed α‐Hydroxyalkylation and α‐Aminoalkylation of Activated Olefins (The MoritaBaylisHillman Reaction)

The enantioselective MoritaBaylisHillman reaction and its aza counterpart


Asymmetric Morita− Baylis− Hillman Reactions Catalyzed by Chiral Brønsted Acids








Tuesday, January 24, 2017

MRSA - wiki

Methicillin-resistant Staphylococcus aureus (MRSA is a bacterium responsible for several difficult-to-treat infections in humans. MRSA is any strain of Staphylococcus aureus that has developed, through horizontal gene transfer and natural selectionmulti- resistance to beta-lactam antibiotics, which include the penicillins (methicillindicloxacillinnafcillinoxacillin, etc.) and the cephalosporins. MRSA evolved from horizontal gene transfer of the mecA gene to at least five distinct S. aureus lineages







Methicillin-resistant Staphylococcus aureus (MRSA): review