کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1252132 | 1496331 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A high yield procedure for the preparation of arsonolipids (2,3-diacyloxypropylarsonic acids)
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کلمات کلیدی
DMAP4-dimethylaminopyridineDCCArsonolipidsN,N′-dicyclohexylcarbodiimide - N، N'-dicyclohexylcarbodiimideBoron trifluoride etherate - اتریت تری فلوراید بورOctadecanoic acid - اسید OctadecanoicStearic acid - اسید استئاریک Hexadecanoic acid - اسید هگزادکانیکFatty acid - اسید چربPalmitic acid - پالمیتیک اسیدPyridine - پیریدین Glycidol - گلیسیدول
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A high yield procedure for the preparation of arsonolipids (2,3-diacyloxypropylarsonic acids) A high yield procedure for the preparation of arsonolipids (2,3-diacyloxypropylarsonic acids)](/preview/png/1252132.png)
چکیده انگلیسی
The crucial step in the preparation of the title arsonolipids starting from the dichloromethane-soluble dithioarsonite CH2(OH)CH(OH)CH2-As(SPh)2 is to avoid an internal cyclization during the acylation which protects the primary -OH group from being acylated. This was to a large extent accomplished by using fatty acyl chloride in the presence of the weak base pyridine and controlling the temperature and rate of the acyl chloride addition, giving â¼70% yields of arsonolipids. The presence of catalytic amounts of 4-dimethylaminopyridine boosted the yields to 82-85%. This yield is a great improvement over the yields (20-55%) previously achieved. The acylating systems (RCO)2O or RCOCl and BF3·Et2O gave only moderate yields (25-60%) of arsonolipids.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemistry and Physics of Lipids - Volume 163, Issue 1, January 2010, Pages 51-55
Journal: Chemistry and Physics of Lipids - Volume 163, Issue 1, January 2010, Pages 51-55
نویسندگان
Panayiotis V. Ioannou, Gerasimos M. Tsivgoulis,