最爱黄冕
Natural pharmaceutical chemistry purpose From developing the new drug developing in natural medicine (the structure including the guide compound polishes with make over , entire combining),this is that we study natural pharmaceutical chemistry major objective. The degree of difficulty the pure compound new drug is developed is big , the period is long , cost is high, the poisonous chemistry medicine side effect is big , easy to produce resistance to drugs, health brings about to the human body hurt, but the activity component sometimes has higher security from nature that green gets in life plant , medicine and medicine taking natural medicine as raw material extract thing favour accepting people gradually in all the countries in the world therefore.(1) is made by nature a great variety , structure are new and original , the hit rate that the pharmacology sifts is higher than composing compound , originate from natural guide compound having hope very much becoming the new drug curing difficult and complicated cases's , study direction therefore one already becoming a nowadays from the new drug developing in natural medicine is popular. Somebody forecasts , future natural medicine will have equal shares with chemistry medicine, power of assuming a situation of tripartite confrontation together with living things medicine. (2) is not the natural activity compound short, because of existence some defects, existence definitely poisons or a side effect, or resource shortage, is difficult to draw materials from natural raw material middle because contents are very low,or excessively, complicated , compose because of structure if pesticide effect is not ideal, also very difficult , develop the future making use of therefore self is not direct. And but take natural activity component as guide compound, the structure being in progress polishes or structure reforms, ultimate exploitation becomes a new drug.For example: The cries of a baby replaces the morphine combining substitution- stablely (dolantin) , (the effect is invariable now that effective in having reserved morphine structure part eases pain)! ,Use whose more obvious than morphine habituation sex lessening. Such as: In Gukeye, active constituent cocain has the very strong anaesthesia effect, but big , easily able addiction of toxicity, by studying the ethocaine designing the anaesthetic having composed waits. No matter how regular: Active Artemisia apiacea is plain from the malaria extracting having parting for in Artemisia apiacea resisting , is one kind of hot unsteady compound, the stability improves obviously after manufacturing the Wormwood A ether derivative if hydrogenate with the person , methylate,resist malaria activity strengthening especially.
flower99sunny
燕子去了，有再来的时候;杨柳枯了，和青的时候;桃花再开的时候。但是，聪明的，你告诉我，为什么我们的日子去了呢？ - 有人偷了他们吧：那是谁？又藏在何处呢？自己逃生“： 我不知道他们给了我多少日子，但我的手确是渐渐空虚了。在默默里算着，八千多日子已经溜去我滴水滴像点的大海捞针，我的日子滴在时间的流，没有声音，也没有影子。我不禁渗出和眼泪杉杉。 去，去到中间来了，什么是抓紧时间吧？当我在早晨起床时，一个小房间里渗透在两个或三个倾斜的太阳。太阳他有脚啊，轻轻悄悄地挪移了;我穿旋转。于是 - 洗手天从水盆里过去;吃饭时你的手，每天从碗里，在过去的沉默开始之前，在过去的目光，我能感受到他急忙伸出我的手，他斜斜的太阳。把手伸了过去，天黑时，我躺在床上，他的固定的目光从我的对面，我的脚飞的去了。所以，我睁开眼睛，太阳再次，这已经是一天，我在她叹了口气，但阴影的新的一天，孩子们开始叹息一闪而过。 逃离飞行天在喧闹的世界里，我能做些什么呢？只有徘徊罢了，只有匆匆罢了; 82多天的匆匆里，除徘徊外，又剩，并留下什么呢？过去的日子如轻烟，微风吹散了如薄雾，被初阳蒸;我留着些什么痕迹呢？我没有留下任何像游丝样的痕迹呢？裸体我进入这个世界上，不久也将赤裸裸这是不公平的，为什么我们苦求不得的去啊？ 你聪明的，告诉我，为什么我们的日子去了呢？
瞳言無忌
The purpose of Natural Medicinal ChemistryFrom natural medicines in the research and development of new drugs (including the lead compound of structure modification and transformation, the total synthesis), which our study of natural medicines are the main purpose of the chemical. Pure compounds to develop new drugs is very difficult, long cycle and the high cost of chemotherapy side effects, and easy to produce drug resistance, cause injury to human health, and from green plant life of the natural active ingredients often have high security, so to natural medicine as raw materials of drugs and drug extracts in the world is increasingly popular(1) a wide range of natural products, novel structure, pharmacological screening of the hit rate than the high synthetic compounds derived from natural lead compounds promising treatment for difficult cases of new drugs, so drugs from the natural development of new drugs has become a Top research directions. It was predicted that the future of natural drugs and chemical substances will be evenly divided, and biology were the three drugs with a tendency(2) A number of natural active compounds, because there are some defects, such as efficacy is not satisfactory, or side effects must exist, or because the content is too low, shortage of resources, it is difficult to Medium derived from natural raw materials, or because the structure was too complex, synthetic is also very difficult, so there is no direct the development and utilization of their own future. However, the natural active ingredients for the lead compounds, structural modification or structural alteration, and eventually developed into new drugs. For example: synthetic morphine substitutes - is scheduled for piperaquine (meperidine), morphine is retained in the structural parts of an effective (analgesic effect of the same!), And its addictive than morphine decreased. Another example: the active ingredient in coca leaves cocaine has a very strong narcotic effect, but toxic, easy to addiction, through research design and synthesis of local anesthetics such as procaine. Again Example: to extract from the Artemisia annua with the separation of anti-malarial activity of artemisinin, is a heat-labile compounds, such as its hydrogenated, methylated derivatives artemether made after the markedly improved stability, anti - more enhanced malaria activity. 问题补充的翻译：In the 21st century, "return to nature" of the world trend, the traditional medicine once again full of great vitality and show broad prospects for development. Western medicine sector has changed the original opinion, interested in Chinese medicine to Chinese medicine in Japan, Germany, the United States and other Western developed countries has been given scant attention up.World Association of Traditional Chinese Medicine in 1994, set up in Los Angeles, the West has also opened a number of institutions of higher learning professional courses on Chinese medicine or the establishment of a Chinese medicine research center. The United States Food and Drug Administration (FDA) have begun to formally accept the traditional Chinese medicine compound products. This trend of Chinese medicine into the world to provide an unprecedented good opportunity. Modernization of Traditional Chinese Medicine is the inevitable trend of the modernization of Chinese medicine must be to the world and the benefit of mankind. The development of Chinese medicine is the medicine our country in the competition to win one of the effective ways.
