The following stereospecific synthesis is part of the scheme used by E. J. Corey of Har- vard University in the synthesis of erythronolide B, the precursor of the erythromycin antibiotics. In this remarkably simple set of reactions, the relative configurations of five chiral centers are established. OH 1. ВН, THF CrOg, H,SO4 CH;ONa 2. Н,О», NaOH acetone 2,4,6-Trimethyl- phenol HO COOH A B C Br Br Brg, H,O КОН Brg, H,O KBr THE KBr СООН E F

Q: 2-butanol can be formed as the only product of the Markovnikov addition of H2O to two different…

A: Step 1: Step 2: Step 3: Step 4:

Q: draw phosphatidylserine which contains cis-Δ9-hexadecenoate and cis, trans, cis-Δ9, Δ12,…

A: The phosphatidylserine with cis-Δ9-hexadecenoate and cis, trans, cis-Δ9, Δ12, Δ15-octadecatrienoates…

Q: *What are the products of saponification (hydrolysis with NaOH as the catalyst) of 1-stearoyl-2,…

A: Triglycerides are fatty acid esters of glycerols. Fatty acids are carboxylic acids with a long…

Q: Which of the following conversions require more than one step? 1. Alanine Ⓡpyruvate 2. Aspartate…

A: Solution:- The 5th option is correct i.e Proline ®glutamate.Reason- Conversion of Proline ®glutamate…

Q: dentify the following as properties of either glycogen, amylopectin, both glycogen and amylopectin,…

A: Polysaccharides are complex biomolecules composed of carbohydrates made up of long chains of…

Q: Identify the equilibrium expression for the reaction: 2 NO(g) N2(g) + O2(g) K- [N][O] 2[NO] O [NO]…

A:

Q: Write the structure of UDP-N-acetylglucosamine and UDP-galactosamine.

A: UDP-N-acetyl (UDP-GalNAc) glucosamine and UDP-(GalNAc) galactosamine are the amino sugar of…

Q: How many trimethylcyclopentanes are possible?

A: The chemical name of trimethycyclopentane is  CIS, CIS, TRANS-1,2,4-TRIMETHYLCYCLOPENTANE.

Q: Dehalogenase enzymes catalyze the clevage of C-X bonds. One such dehalogenase catalyzes the…

A: A dehalogenase enzyme removes a halogen atom from a substrate. It is found in certain bacteria such…

Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.