Practical plant biochemistry / [Muriel Onslow].

  • Onslow, Muriel Wheldale, 1880-1932.
Date:
1920
Catalogue details

Licence: In copyright

Credit: Practical plant biochemistry / [Muriel Onslow]. Source: Wellcome Collection.

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    CH—CH CH.,—CH., il II II CH CH CH., CH., \/ \ / NH NH Pyrrole Pyrrolidine These alkaloids form a small group containing: Hygrine and cuskhygrine which occur in Coca leaves (Erythroxylon Coca). t Stachydrine which occurs in tubers of Stachys tuberifera and leaves of the Orange Tree (Citrus Aurantium) and in various other plants (Betonica). The formula is : CH.,—CH.2 II CO—CH CH., I \/ O N (CH3)2 from which it is seen that it is really a betaine (see p. 157). 3. The tropane alkaloids. These are derivatives of tropane, which ma}^ be regarded as formed from condensed piperidine and pyrrolidine groupings. (Tropane is a liquid boiling at 167° C.) CH._, CH, CH., | j CH CH |\ /I nch3 CH.,— CH2 Tropane The alkaloids in this group are limited to four natural orders and are as follows: Solanaceae: Atropine occurs in the root and other parts of the Deadly Nightshade (Atropci Belladonna), the Thorn Apple (Datura Stramonium) and Scopolict japonica. Atropine may be represented as: CH—O—CO—CH • CH..OH / \ I CH, CH, C„H5 II CH CH |\/| NCH. O. CH,—CH2 11