Pyran - Wikipedia
网页In chemistry, pyran, or oxine, is a six-membered heterocyclic, non- aromatic ring, consisting of five carbon atoms and one oxygen atom and containing two double bonds. The molecular formula is C 5 H 6 O. There are two isomers of pyran that …
吡喃 - 百度百科
网页吡喃，是含有一个氧原子的完全不饱和六元杂环化合物，它有两个双键，根据双键位置的不同，可以有两个异构体：2H-吡喃和4H-吡喃。. 吡喃并不是一个闭合的共轭体系，但它的吡啶季铵盐的类似物吡喃鎓盐是一个闭合的共轭体系，有一定的芳香性和稳定性。. 未 ...
Pyran | Flammable, Hydrocarbon, Cyclic Compound | Britannica
网页pyran, any of a class of organic compounds of the heterocyclic series in which five carbon atoms and one oxygen atom are present in a ring structure. Of two possible simple pyran compounds, only one is known; it was prepared in 1962 and found to be very unstable.
Pyran - an overview | ScienceDirect Topics
网页Pyrans constitute an important class of 6-member heterocycles with one oxygen atom. This article outlines applications of pyrans and their benzo derivatives for the time period 2008–18.
The value of pyrans as anticancer scaffolds in medicinal chemistry
网页Pyran is an oxygen-containing heterocyclic moiety, which exhibits an array of pharmacological properties. Pyran is also one of the important structural subunits found widely in natural products, e.g. coumarins, benzopyrans, sugars, flavonoids, xanthones, etc. The diverse anticancer capabilities of pyrans have been 2017 Review articles.
The value of pyrans as anticancer scaffolds in medicinal …
网页The in vitro, in vivo, and in silico experiments have shown pyrans to be molecules with potentially exploitable structures for the development of new cytotoxic and anticancer agents. Moreover, structures of designed and synthesised molecules discussed in this compilation clearly highlight the interesting and promising anticancer profiles along ...
Pyrans: Heterocycles of chemical and biological interest
网页2015年11月1日 · Six-membered heterocyclic compounds containing oxygen such as 2H-pyran and 4H-pyrans constitute an important class of biologically active natural and synthetic products, playing a fundamental...
Recent Progress in the Multicomponent Synthesis of Pyran …
网页2022年9月26日 · This review focuses on the recent developments in synthesising pyran ring derivatives using reusable catalysts and emphasises the multicomponent reaction strategies using green protocols. The advantages of the catalysts in terms of yields, reaction conditions, and recyclability are discussed.
Recent Progress in the Multicomponent Synthesis of Pyran ... - MDPI
网页2022年9月26日 · Pyrans are one of the most significant skeletons of oxygen-containing heterocyclic molecules, which exhibit a broad spectrum of medicinal applications and are constituents of diverse natural product analogues. Various biological applications of these pyran analogues contributed to the growth advances in these oxygen-containing molecules.
Recent Progress in the Multicomponent Synthesis of Pyran
网页2022年9月26日 · This review focuses on the recent developments in synthesising pyran ring derivatives using reusable catalysts and emphasises the multicomponent reaction strategies using green protocols. The advantages of the catalysts in terms of yields, reaction conditions, and recyclability are discussed.