数学作业代写：葡萄糖的合成过程和反应

Pummerer重排:这是一个有机反应,烷基亚砜重新在形式的α-acyloxy-thioether乙酸酐的存在。在整个过程中，硫被还原，而另一边，相邻的碳被氧化。

Pummerer Rearrangement: This is an organic reaction where an alkyl sulfoxide rearranges in form of α-acyloxy–thioether in the presence of acetic anhydride. In this entire process, sulfur reduced while on the other side, the adjacent carbon is oxidized.
Sharpless Asymmetric Epoxidation: The Sharpless Asymmetric Epoxidation is an enantioselective reaction that helps in preparing 2,3 epoxy alcohols derived from primary and secondary allylic alcohols.
Anomeric Effect: Anomeric effect is called Edward-Lemieux effect. This is a stereo electric effect that describes the tendency of heteroatomic substances. This effect is adjacent to the heteroatom within a cyclohexane ring. This effect prefers the axial orientation instead of less hindered equatorial orientation.
Payne Rearrangement: This rearrangement focus on isomerization under basic conditions. 2,3 epoxy alcohols to isomeric 2,3 epoxy alcohols with inversion of configuration.

The above is the firest reaction before the actual sysnthesis happeend. The reagents for first level reaction is NaBH4. After this it was converted to Ketone, with sequential reduction, selective benzoylation and Swern oxidation.

In the second steps, the ketone was converted in to Cyanohydrin with NaHSO3 and KCN, two-step process.
In the third step, Irradiation of crude product (as obtained after second step) with a tungsten lamp in the presence of phenyliodine (III) diacetate and iodine, resulted in to the next radical cyclization product as shown in the synthesis process.

In the fourth step, the radical cyclization product went through 4 step process of sequential acid hydrolysis, decarboxylative radical oxygenation and protection, resulted in to the paeoniflorin’s intermediate product. In the fourth step, it was intermediate product.
In the fourth step, again, with the ozonolysis and Baeyer-Villiger rearrangement and hydrolysis the tertiary alcohol was obtained named as benzyl carbonate derivative of paeoniflorigenin.
The benzyl carbonate derivative of paeoniflorigenin, was then introduced with D-glucosyl group and deprotection to get the final glucoside (-)-paeoniflorin product.
In the entire synthesis, all these reagents were introduced form step 1 to 5th in order to get the final product.

关于论文代写价格有哪些问题?如何识别骗子代写?

关于论文代写价格有哪些问题?如何识别骗子代写?论文代写价格虽然没有统一标准，但在现在市场中还是很...