Chapter 31: Q15P (page 1253)
Draw the enantiomer and any two diastereomers of cholesterol. Does the OH group of cholesterol occupy an axial or equatorial position?
Short Answer
Answer
Chapter 31: Q15P (page 1253)
Draw the enantiomer and any two diastereomers of cholesterol. Does the OH group of cholesterol occupy an axial or equatorial position?
Answer
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Get started for freeDraw all possible constitutional isomers of a triacylglycerol formed from one mole each of palmitic, oleic, and linoleic acids. Locate the tetrahedral stereogenic centers in each constitutional isomer.
Convert the ball-and-stick model of androsterone to (a) a skeletal structure using wedges and dashed wedges around all stereogenic centers; and (b) a three-dimensional representation using chair cyclohexane rings.
androsterone
The biosynthesis of lanosterol from squalene has intrigued chemists since its discovery. It is now possible, for example, to synthesize polycyclic compounds from acyclic or monocyclic precursors by reactions that form several C-C bonds in a single reaction mixture.
Treatment of cholesterol with mCPBA results in formation of a single epoxide A, with the stereochemistry drawn. Why isnโt the isomeric epoxide B formed to any extent?
Axial alcohols are oxidized faster than equatorial alcohols by PCC and other oxidants. Which OH group in each compound is oxidized faster?
a.
b.
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