(a)
Interpretation: The skeletal structure of the anabolic steroid methenolone from the given description is to be drawn.
Concept introduction: Steroids are composed of tetracyclic lipids. They have structure containing three six membered ring and one five membered ring. Some of the steroids are biologically active.
(b)
Interpretation: The skeletal structure of the anabolic steroid methenolone from the given description about the configurations at the stereogenic centers is to be drawn.
Concept introduction: Steroids are composed of tetracyclic lipids. They have structure containing three six membered ring and one five membered ring. Some of the steroids are biologically active.
The stereogenic centers with
(c)
Interpretation: The structure of Primobolan, the product formed on the treatment of methenolone with
Concept introduction: In the presence of base, the hydroxyl group loses its proton to form alkoxide. The alkoxide attacks on the carbonyl carbon of acyl chloride or acylic anhydride to leading to the formation of acyl group and removal of chloride. This process is known as acylation.
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Organic Chemistry (6th Edition)
- 1) Identify the number of hydrogens implicitly attached to the five specified carbons in this bond-line structure of cholesterol. 2) Identify (circle and name) all of the functional groups in the following structure of serotonin.arrow_forward4. (a) Draw a skeletal (line-bond) structure for 3,4-dimethylhexane. (b) Draw a sawhorse representation of any staggered conformation of this molecule looking down the carbon-3 to carbon-4 bond. (c) Draw a Newman projection looking down the carbon-3 to carbon-4 bond of the same conformation that you drew as a sawhorse representation.arrow_forward1) Below you are given the structures of the disaccharides lactose and trehalose. он он но он но но OH но но OH но он но но OH Lactose Trehalose a. Identify clearly the hemiacetal and acetal groups in these disaccharides and determine for each of these identified groups if they have a- or B-configuration.arrow_forward
- (b) Classify the following two pairs of structures as conformational or configurational isomers. Explain your answer. and HO, OH il. and ноarrow_forward31. Which of the following statements about cholesterol is not correct? CH. HO Cholesterol 16 (a) Cholesterol is a steroid that contains a tetracyclic ring system. (b) Cholesterol is a steroid that contains 8 chiral carbons and can form 28 or 256 stereoisomers. (c) Each atom or group attached to a ring-junction carbon (i.e., carbons a-e) is in a trans or axial position. Because of this the tetracyclic ring system is mostly flat. (d) Cholesterol is used to synthesized vitamin D, bile acids, sex hormones, and adrenocorticoid hormones. (e) Cholesterol is not found in the cell membranes of animals.arrow_forwardCalculate the degree of unsaturation in each of the following formulas (a) Cholesterol, C27H46o (b) DDT, C14HgC15 (c) Prostaglandin E1, C2oH3405 (d) Caffeine, C8H10N402 (e) Cortisone, C21H28O5 (f) Atropine, C17H23NO3arrow_forward
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- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning