Then coupling with A ring synthon, closing, deprotection, the aim product was synthesized finally.
然后再与A环合成子偶联、关环、脱保护完成目标产物的全合成。
The deprotection procedure of phenylacetyl group is the basic way to synthesis many kinds of cephem intermediates.
苯乙酰基的脱除工艺是合成众多头孢菌素的基本步骤。
Methods: Salicylic acid glucose esters were synthesized from glucose by condensation, oxidization, deprotection and esterification.
方法：由葡萄糖通过缩合、氧化、去保护、酯化反应制备水杨酸葡萄糖酯。
Methods: An efficient route was started from the cheaper materials alanine and glutamic acid via protection, deprotection and coupling reactions.
方法：以廉价易得的谷氨酸和丙氨酸为起始原料，经端基保护、脱保护、缩合等步骤得到一个有效的合成路线。
Clarithromycin was prepared from erythromycin a through oximation, protection, methylation and deprotection. The overall yield of clarithromycin was 40%.
红霉素碱经肟化、保护再经甲基化、脱保护得到克拉霉素，总收率达40 %以上。
Chiral ketone 4 derived from D-(-)-fructose was obtained by four steps reaction including protection with acetone, oxidation, deprotection selectively and trifluroacetylation.
以D-（-）-果糖为手性源，经过丙酮保护、氧化、选择性脱保护、三氟酰化四步反应得到手性酮4。
In the last step, we developed two methods of deprotection employing zinc dust and catalytic hydrogenolysis respectively to give the final product, and improved the work-up as well.
在最后一步脱保护基的研究中，我们分别采用了锌粉还原和钯碳氢化两种方法得到最终产品，并对其后处理的方法进行了改进。
Currently, the reaction progress monitoring focuses on amide acylation and deprotection reaction, while there is no method for the reaction progress of the intermediate-active esters.
目前，合成过程的中间监测方法主要集中在胺酰化及脱保护反应，而对于中间体一活化酯的反应进程没有监测方法。
The results show that the major component of the crude peptide is the target peptide thymopentin and the main by-products are derived from incomplete deprotection of the desired peptide.
结果证明，粗产物中的主成分即为目标五肽，另外几个主要副产物为五肽合成过程中去保护未完全的副产物。
The photoinduced electron transfer reaction between N-tosyl amides and 2-phenyl-N, N'-dimethyl benzimidazoline (PDMBI) provides an efficient approach for the deprotection of N-tosyl amides.
对甲苯磺酰基酰胺和2-苯基-N，N'-二甲基苯并咪唑啉（PDMBI）之间的光诱导电子转移反应，为酰胺的保护基——对甲苯磺酰基的脱除反应，提供了一条有效途径。
The photoinduced electron transfer reaction between N-tosyl amides and 2-phenyl-N, N'-dimethyl benzimidazoline (PDMBI) provides an efficient approach for the deprotection of N-tosyl amides.
对甲苯磺酰基酰胺和2-苯基-N，N'-二甲基苯并咪唑啉（PDMBI）之间的光诱导电子转移反应，为酰胺的保护基——对甲苯磺酰基的脱除反应，提供了一条有效途径。
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