将新戊酰氯氯化为制得的3-氯新戊酰氯在全回流的填充蒸馏塔中进行。
The chlorination of pivaloyl chloride to prepared 3-chloropivaloyl chloride was took place in a packed distillation column with total reflux.
异戊酰- L -肉碱的酶催化合成需要选择疏水、极性的溶剂作为反应介质。
To improve significantly the biosynthesis of isovaleryl-L-carnitine catalyzed by lipase needs to select an efficient and suitable reaction medium that is not only polar but also hydrophobic.
BIB0830是一株可将泰乐菌素转化为乙酰异戊酰泰乐菌素的耐热链霉菌工业菌株。
The industrial strain BIB0830 of Streptomyces thermotolerans can produce acetyl-isovaleryl tylosin by bioconversion using tylosin as a processor.
方法：用氯仿作溶剂，在浴温条件下，4羟甲基笼状双环磷酸酯分别与戊酰氯、己酰氯发生酰化反应。
Methods:Chloroform being solvent, under bath heat, 4 hydroxymethyl caged bicyclic phosphate acylated with pentanoyl chloride and hexanoyl chloride dividedly.
生物脂质来源于酮脂酰和异戊二烯基团。
Biological lipids originate from ketoacyl and isoprene groups.
新型抗生素s632a_3是从土壤中分离出的一株放线菌产生的代谢产物，属戊二酰亚胺类化合物。
A new antibiotics, S632As, glutarimide antibiotics compounds, is a metabolic product from a strain of Antinomyces isolated from soil, and is dealt with in this paper.
以叔戊苯和笨酐为原料，通过酰基化和关环合成了2—戊基蒽醌，改进和优化了各步合成工艺条件，酰化收率80.2％，关环产品收率81.4％。
An improved and optimum process for preparing 2-Amylanthraquinone by re-acting t-amylbenzene with phthalic anhydride, involving Friedel-Crafts acylation (yield 80. 2%) and cyclization(yield 81.4%).
他汀类药物能阻断羟甲基戊二酸单酰辅酶A还原酶，该酶与多种脂肪的产生有关，阻断该酶可以降低胆固醇水平。
Smoke breakStatins block an enzyme called HMG-CoA reductase, which is involved in the production of various fatty molecules. Blocking this enzyme lowers cholesterol levels.
结论：普伐他汀不能抑制肝细胞PAI-1的分泌。羟甲基戊二酰辅酶A还原酶的抑制与PAI- 1分泌可能没有关系。
Conclusion:Pravastatin can not inhibit the secretion of PAI 1 in hepatic cells and the inhibition of hydroxymethylglutaryl coenzyme A reductase may not be related to the secretion of PAI 1.
本文利用了戊二酸二乙酯在一定反应条件下合成戊二酰二肼。
In this paper, two dihydrazides were synthesized with hydrazine and diethy1 ester.
美伐他汀是3羟甲基戊二酰辅酶a还原酶的有效的竞争性抑制剂，它是一种胆固醇生物合成调解酶。
Mevastatin is a potent competitive inhibitor of 3-hydroxy-3-methyl-glutaryl-coa reductase, a regulatory enzyme for cholesterol biosynthesis.
美伐他汀是3羟甲基戊二酰辅酶a还原酶的有效的竞争性抑制剂，它是一种胆固醇生物合成调解酶。
Mevastatin is a potent competitive inhibitor of 3-hydroxy-3-methyl-glutaryl (HMG) -coa reductase, a regulatory enzyme for cholesterol biosynthesis.
美伐他汀是3羟甲基戊二酰辅酶a还原酶的有效的竞争性抑制剂，它是一种胆固醇生物合成调解酶。
Mevastatin is a potent competitive inhibitor of 3-hydroxy-3-methyl-glutaryl (HMG) -coa reductase, a regulatory enzyme for cholesterol biosynthesis.
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