酮体

One compound is identified as the title compound 2-benzyloxy-5-fluoro-4-oxo-pyrimidine-3-butyric acid ethyl ester, and the other one is its formula isomer.

通过IR谱确证一个化合物是目标物2-苄氧基－5-氟－4-嘧啶酮－3-丁酸乙酯，另一化合物是它的同分异构体。

It showed that the yeast KD had higher fermentation capacity, gentle fermentation speed, and the produced kiwi fruit wine was clear and transparent with light yellow color and typical kiwi fruit aroma and wine-alcohol bouquet. Furthermore, the produced kiwi fruit wine had high alcohol content to 10.5 %vol, high vitamin C content to 0.94 g/L and low content of reducing sugar, total acid and volatility acid. 48 aroma substances in total were identified including esters (19 kinds, 34.65 %), higher alcohols(5 kinds,15.38 %), fatty acids(6 kinds,13.30 %), and micro-content of alkyls, aldehydes and ketones, which accounted for 97.33 % of total peak area. Such yeast was suitable for kiwi fruit wine brewing. Tran. by YUE Yang

结果表明，酵母KD的单位酵母发酵力较高，发酵速度平缓，所酿猕猴桃酒澄清、透明，色泽浅黄，酒体醇和爽口，具有猕猴桃果香和纯正的酒香，典型性强；酒度达10.5 %vol，Vc含量为0.94 g/L，残糖、总酸和挥发酸含量均较低；共鉴定出48种香气物质，占总峰面积的97.33 %，其中，酯类物质达19种，相对含量为34.65 %，高级醇(5种，15.38 %)和脂肪酸（6种，13.30 %）含量少，烷烃类和醛酮类等香气物质种类丰富，酒体协调、饱满，是1株适宜猕猴桃酒酿造的优良酵母。

Herein we mainly discuss the asymmetric addition of terminal alkynes to aldehydes and ketones using commercially available chiral pool and their derivatives.

这篇论文论述了商业化的手性源及其衍生物配体催化的末端炔对醛和酮的不对称加成反应的研究。

All the prepared compounds were characterized by 〓H NMR、〓P NMR and elemental analysis. The catalytic activity of each prepared chiral phosphorus compound in the borane reduction of prochiral ketones was studied.

对每一种手性磷化合物，考察了其作为配体催化剂在潜手性酮的不对称硼烷还原反应中的催化效果，讨论了影响不对称诱导的各种因素。

In the reduction of 1, 6-diphenyl-1, 6-hexanedione catalyzed by the bis-squaryl proline, good enantioselectivities were obtained, the ee values were up to 90%.We also studied the asymmetric borane reduction of prochiral ketone catalyzed by a series of thiazolidine ligands.

本文考察了由L-半胱氨酸衍生的2-位无取代基的以及2-位芳基取代的噻唑烷酸及醇配体在前手性酮的不对称还原反应中的催化性能。

The total energy of 8-hydroxyquinoline was lower than that of quinolin-8(1 H )-one, whereas the order was reversed in dimers.

通过能量比较，8-羟基喹啉比喹啉-8(1H)-酮要低，但是在二聚体却恰恰相反。

Two approaches for the asymmetric syntheses of naturally occuring eudesmane-type triol kudtriol and 5-epi-kudtriol as well as their C-11 epimers were achieved starting from-dihydrocarvone through six and seven steps, respectively.

以-二氢香芹酮为原料，用两条合成路线分别经六、七步反应完成了三羟基桉烷类天然产物Kudtriol、5-epi-Kudtriol及它们的C-11位差向异构体的不对称全合成。

In the paper, new type of polyurethane ionomers containing carboxyl in soft segments was synthesized with IPDI, DMBA, carboxylated polycaprolactone etc.

本文利用一种新型的聚己内酯、异佛尔酮二异氰酸酯、二羟甲基丁酸等合成了软段含有羧基的聚氨酯离聚体。

Another example of chiral recognition is found in the effect these two carvone isomers have on rates of reaction.

我们也发现这两个香芹酮异构体对反应速率有不同影响的其他手性识别5的例子。

I have not allowed an official holiday, are one or two months to once menopause is now three months, May 20 B overtime doctor said endometrial thickening may Come official holiday, and June 2 progesterone started to play a five-day, one has so far not come to an official holiday, I used dipstick test has two lines, above, a comparison test line deep below the control line is pink , June 13 to go to the hospital, I am super-B, the doctors have not seen anything that may not yet intrauterine, asking me to check again after seven days, B-list so written "before the uterus, and slightly large, muscular wall echo uniform endometrial thickening 1.2CM, no ……"I now do not know how to do, I do not know any expert can give me some advice?

我例假一直不准，都是一两个月来一次，现在已经停经三个月了，5月20号B超时医生说子宫内膜增厚，可能快来例假了，6月2号开始打了五天黄体酮，一直到现在也没来例假，我用试纸测有两条线，上面一条检测线比较深下面的对照线是粉红色的，6月13号上午我去医院B超，医生说还没看到什么东西，可能还没到宫腔，要我七天之后再去检查，B超单上这么写的&子宫前位，稍大，肌壁回声均匀，子宫内膜增厚1.2CM，未见……&我现在已经不知道怎么办了，不知道哪位专家可以给我点意见？

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。