Extract of Ephedra sinica, a Chinese herbal treatment for asthma, contains the compound ephedrine, which dilates the

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Extract of Ephedra sinica, a Chinese herbal treatment for asthma, contains the compound ephedrine, which dilates the air passages of the lungs. The naturally occurring stereoisomer is levorotatory and has the structure shown here.
(a) What is the configuration (R,S) at each stereogenic center?
(b) How many stereoisomers of ephedrine are possible altogether?
(c) Compare the structure of (-)-ephedrine to that of (-)-epinephrine. How are they similar and how do they differ?
Extract of Ephedra sinica, a Chinese herbal treatment for asthma,
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Organic Chemistry A Short Course

ISBN: 978-1111425562

13th edition

Authors: Harold Hart, Christopher M. Hadad, Leslie E. Craine, David J. Hart

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