Titlebook: Carotenoids; Volume 2: Synthesis George Britton (Reader in Biochemistry),Synn?ve Li Book 1996 Birkh?user Verlag 1996 Natural products chemi

痛苦一生

Structure, Performance, Cost, and Outcome,is important group of compounds has been reported, investigations on the partial synthesis of these glycoconjugates are largely missing. The various methods for the synthesis of glycosides have recently been reviewed [1] and this should give a basis for further research in the field of carotenoid glycosides.

radiograph

Strategies for Building the Carbon Skeletonew methods and strategies that became established early in this century have since been used repeatedly and some of these have been developed to the scale of industrial syntheses. The aim of this Chapter is to provide a guide to the simplest route to a particular target carotenoid.

亞當(dāng)心理陰影

Factorable

Enol Ether and Aldol Condensationscarbon-carbon double bonds. In general, the enol ether reaction has been employed successfully for the condensation of a wide range of acetals and sometimes of ketals with enol ethers and dienol ethers.

流出

Wittig Olefinationriphenylphosphine oxide (.) in virtually quantitative yield (Scheme 1) [1]. This observation triggered the rapid development of the synthesis method termed ‘Wittig-carbonylolefination’ or, in brief, the ‘Wittig reaction’ or ‘Wittig condensation’.

拋棄的貨物

Partial Synthesis of Glycosides and Glycosyl Estersis important group of compounds has been reported, investigations on the partial synthesis of these glycoconjugates are largely missing. The various methods for the synthesis of glycosides have recently been reviewed [1] and this should give a basis for further research in the field of carotenoid glycosides.

Congregate

Properties of the Organization Structure,An olefinic bond can be produced by alkylation of the α-carbanion of a sulphone followed by base-promoted elimination (Equation 1). This process is attractive practically in view of recovery of the reagent.

暴露他抗議

The Efficiency of the Design Process,In this part of the Chapter, selected synthetic routes are described for the most important isoprenoid building blocks used in the construction of the polyene chain, .. C(8) to C(8′) of the carotenoid molecule.

燒烤

https://doi.org/10.1007/0-387-28317-XFor general remarks the reader is referred to Chapter 3 Part II Section A.

疼死我了

Structure, Performance, Cost, and Outcome,In this part of the Chapter, the synthesis of carotenoids labelled with stable isotopes at predetermined positions is described. These labelled molecules are extremely valuable for research on the structure and function of carotenoids at the atomic level in protein complexes.