de novo synthesis和total synthesis 有什么区别

de novo synthesis(从头合成) :应该是从简单的碳氢化360问答合物开始合成
total synthesis （全合成）：应该是从廉价易得的原料开始把,话入或从较容易得到目标化合物的原料开始,所需反应步骤应简单
De novo synthesis ref什源鲁创烧超急垂ers to the synthesis of complex molecules from simple molecules such as sugars or amino acids,as opposed to their being recycled after partial 敌毛渐证故跳周针映展degradation.For example,de novo synthesis of nucleotides is an alternative to the salvage pathway.
I培n principle a total synthesis is the complete chemical 企蛋均下甲synthesis of complex organic molecules from their constituent elements.In pra供含钟ctice,simple,co补制审析设华mmercially available (often petrochemical) precursors or natural products (e.g.sugars) are used as starting materials and it is assumed that these have or can be synthesised from their c善急方轴江垂欢吃与验诉onstitue县血晶强令nt elements.Total syntheses are often used as a playground for the development of new chemical reac内排危片岁于模tions and 土府效波座句轻即右斗课routes,and highlight the sophistication of modern synthetic organic chemistry.