다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

抗原变异可使得多种致病微生物易于逃避宿主免疫应答。表达在感染红细胞表面的恶性疟原虫红细胞表面蛋白1（PfPMP1）与感染红细胞、内皮细胞、树突状细胞以及胎盘的单个或多个受体作用，在黏附及免疫逃避中起关键的作用。每个单倍体基因组var基因家族编码约60种成员，通过启动转录不同的var基因变异体为抗原变异提供了分子基础。

疟原虫var基因转换速率变化导致抗原变异[英]／Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A

Examination of nature's favorite molecules reveals a striking preference for making carbon-heteroatom bonds over carbon-carbon bonds-surely no surprise given that carbon dioxide is nature's starting material and that most reactions are performed in water. Nucleic acids, proteins, and polysaccharides are condensation polymers of small subunits stitched together by carbon-heteroatom bonds. Even the 35 or so building blocks from which these crucial molecules are made each contain, at most, six contiguous C-C bonds, except for the three aromatic amino acids. Taking our cue from nature's approach, we address here the development of a set of powerful, highly reliable, and selective reactions for the rapid synthesis of useful new compounds and combinatorial libraries through heteroatom links (C-X-C), an approach we call "click chemistry". Click chemistry is at once defined, enabled, and constrained by a handful of nearly perfect "spring-loaded" reactions. The stringent criteria for a process to earn click chemistry status are described along with examples of the molecular frameworks that are easily made using this spartan, but powerful, synthetic strategy.

https://www.onlinelibrary.wiley.com/doi/pdf/10.1002/1521-3773%2820010601%2940%3A11%3C2004%3A%3AAID-ANIE2004%3E3.0.CO%3B2-5

Click Chemistry: Diverse Chemical Function from a Few Good Reactions.

https://pubs.rsc.org/en/content/articlepdf/2019/NP/C8NP00092A

Marine natural products.

CA : A Cancer Journal for Clinicians

Calyculins A and B differ only by the (E)- vs (Z)-configuration at C(2). Yet, they show a large difference in optical rotations. We demonstrate a new strategy that provides a physical analysis of this long-range chiro-optical effect by Boltzmann-averaged atomic contribution mapping. The polarizability characteristics of the CN substituent rather than the perturbation of the stereogenic centers or the introduction of dissymmetry into the polyene chain give rise to the remarkable difference in rotation angles.

Chiral Action at a Distance: Remote Substituent Effects on the Optical Activity of Calyculins A and B.

Recent synthetic and biological studies of the viridin class of steroidal furans have revealed multiple opportunities for fundamental discoveries as well as advanced drug design. Wortmannin is a potent enzyme inhibitor that binds to the ATP site of important regulatory kinases such as PI-3 kinase and Polo-like kinase. The natural product shares a unique mechanism-based biological activation pathway with other viridins. Furthermore, while there have been several encouraging approaches toward the total synthesis of these compounds, there is still ample room for improvements in synthetic strategies and tactics, and the development of structurally simplified analogs that exert more specific biological effects and are devoid of toxicity issues that have thwarted the clinical development of the parent compounds.

Chemistry and Biology of Wortmannin

A mitochondrial-targeted PARP inhibitor is provided herein, as well as methods of making and using the mitochondrial-targeted PARP inhibitor.

Mitochondrially Targeted PARP Inhibitor, and Uses Thereof

A method for the selective cleavage of a benzodioxole (methylenedioxy group) to a methoxyphenol through the use of a p-methylthiophenoxide ion is described. When the procedure was applied to a lignan derivative such as (−)-austrobailignan-5, the reaction was found to proceed regioselectively, and the intermediate thiacetal could be converted to a catechol, or manipulated to yield either one of the two possible methoxyphenols. Of the two isomers, the one with the bis 3-methoxy-4-hydroxy substitution was found to be identical with (−)-dihydroguaiaretic acid, isolated for the first time from the plant Saururus cernuus

Carboalumination of 1-Alkynes and in situ Transmetalation to Higher Order Cyanocuprates. Stereospecific Synthesis of Tri- and Disubstituted Olefins by Conjugate Addition to Enones.

The present invention provides several methods of synthesis and separation in which organic/fluorous phase separation techniques are used to effect separations. The present invention also provides novel compositions of matter comprising fluorous Si, Sn and Ge compounds.

Peter Wipf

Papers

Chiral Action at a Distance: Remote Substituent Effects on the Optical Activity of Calyculins A and B.

Chemistry and Biology of Wortmannin

Mitochondrially Targeted PARP Inhibitor, and Uses Thereof

Carboalumination of 1-Alkynes and in situ Transmetalation to Higher Order Cyanocuprates. Stereospecific Synthesis of Tri- and Disubstituted Olefins by Conjugate Addition to Enones.

Method for separating organic compounds using fluorous separation systems