Facile Synthesis of 5-Hexyl-4-methyl-γ-butyrolactonevia NefReaction as a Key Step
摘要:
AbstractA racemic cis/trans mixture of 5‐hexyl‐4‐methyl‐γ‐butyrolactone was easily synthesized from 1‐iodoheptane in four steps with inexpensive and readily available reagents. Our new synthesis method can be potentially employed for mass production of the 4‐methyl‐5‐hexyl‐γ‐butyrolactone as well as other poly‐alkyl substituted γ‐butyrolactones.
Facile Synthesis of 5-Hexyl-4-methyl-γ-butyrolactonevia NefReaction as a Key Step
摘要:
AbstractA racemic cis/trans mixture of 5‐hexyl‐4‐methyl‐γ‐butyrolactone was easily synthesized from 1‐iodoheptane in four steps with inexpensive and readily available reagents. Our new synthesis method can be potentially employed for mass production of the 4‐methyl‐5‐hexyl‐γ‐butyrolactone as well as other poly‐alkyl substituted γ‐butyrolactones.
Stoffwechselprodukte von Actinomyceten. 32. Mitteilung. Über die Konstitution von Nonactin
作者:J. Dominguez、J. D. Dunitz、H. Gerlach、V. Prelog
DOI:10.1002/hlca.19620450117
日期:——
The neutral, colourless and optically inactive metabolite nonactin, C40H64O12, obtained from cultures of several Actinomyces strains, is a macrocyclic tetralactone (“macrotetrolide”) I of racemic nonactic acid, C10H18O4. The constitution II has been established for the latter by degradation. Crystallographic data for nonactin are reported.
从数种放线菌菌株的培养物中获得的中性,无色和无光学活性的代谢物非肌动蛋白C 40 H 64 O 12是外消旋非乳酸C 10 H 18 O 4的大环四内酯(“大环内酯”)I 。已经通过退化为后者建立了构造II。报告了非肌动蛋白的晶体学数据。
Benzofurylpyrone derivatives
申请人:Teijin Limited
公开号:US06589984B1
公开(公告)日:2003-07-08
There is provided benzofuryl-&agr;-pyrone derivative represented by the following structural formula (I):
wherein
R1 represents a hydrogen atom or an alkyl group of 1 to 5 carbons;
R2 represents hydrogen, —CO—R5 or —SO2R6;
R3 represents hydrogen, an alkyl group of 1 to 5 carbons, etc.; and
R4 is a substituent attached to the 4-carbon, 5-carbon, 6-carbon or 7 carbon of the benzofuran ring; and their salts. The compounds are useful as therapeutic agent for hypertriglyceridemia, lipid metabolism enhancers, or prophylactic and/or therapeutic agents for arteriosclerosis.
There is provided benzofuryl-α-pyrone derivative represented by the following structural formula (I):
wherein R1 represents a hydrogen atom or an alkyl group of 1 to 5 carbons;
R2 represents hydrogen, -CO-R5 or -SO2R6;
R3 represents hydrogen, an alkyl group of 1 to 5 carbons, etc.; and
R4 is a substituent attached to the 4-carbon, 5-carbon, 6-carbon or 7 carbon of the benzofuran ring; and their salts. The compounds are useful as therapeutic agent for hypertriglyceridemia, lipid metabolism enhancers, or prophylactic and/or therapeutic agents for arteriosclerosis.