Dictionary of the active principles of plants: alkaloids : bitter principles; glucosides; their sources, nature, and chemical characteristics / with tabular summary, classification of reactions, and full botanical and general indexes. By Charles E. Sohn.
- Sohn, Charles E.
- Date:
- 1894
Licence: Public Domain Mark
Credit: Dictionary of the active principles of plants: alkaloids : bitter principles; glucosides; their sources, nature, and chemical characteristics / with tabular summary, classification of reactions, and full botanical and general indexes. By Charles E. Sohn. Source: Wellcome Collection.
Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.
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![(/) CICUTOXIN B. Amorphous, resinous, poisonous ; acid reaction, disagreeable taste. Bohm, Archiv. exp. Pathol., 5, 281. Soluble in alcohol, ether, chloroform, and hot water ; not in petroleum ether. Alkaline hydrates \ ^ ^ Ammonia j 1 ve' § 76. CONVALLARIA majalis (Lily of the Valley) ; Liliacece. In- vestigator : Walz, Jahrb. Pharm., vols. 7 and 8 ; also N. Jahrb. Ph., vols. 5 and 10. (a) CONVALLAMARIN G., O^H^O^. Crystalline, neutral, bitter-sweet taste ; physiogical action like Digitalin. Yields sugar and Convallamaretin. Soluble in water, alcohol, chloroform, amyl alcohol (removed by last two solvents from acid aqueous solution. Insoluble in ether. Reactions: Pp., Tannic acid. Mercurous nitrate, white pp. [No pp., most other reagents.] Ammonia dissolves. [No pp. lead acetate neutral or basic] Colour tests: Sulphuric acid added to aqueous solution, violet. „ „ with bromine, brown, but violet in presence of water. Hydrochloric acid warm, red. (&) CONVALLARIN G., C34H31On (Walz) ; crystallizes in rectangular pillars ; neutral reaction ; sharp taste. Soluble in alcohol, scarcely in water (which it renders frothy), and not in ether. Not precipitated by lead acetate, neutral or basic. § 77. CONVOLVULACEiE various: Convolvulus purga (Ipomcea Schiedeana, Jalap), (a) and (b) ; C. orizabensis and C. scammonia, (c), (d) ; Ipomcea turpethi, (e), (/) ; I. simulans (Tampico jalap), (g). (a) C0NV0LVULIN G. (Buchner's Jalapin, Kayser's Rhodeoretin), C31H50O]6 (Mayer) ; amorphous ; M.P. 150°; feebly acid reaction ; taste- less. Hydrochloric acid converts first into sugar and Convolvulinol (b), then into Convolvulinic acid. It is not traceable in excretions, but may be found in stomach after death. Soluble in acetic acid in all proportions, also in alcohol and acetic ether, but scarcely in water, amyl alcohol, or chloroform, and not in ether, benzene, or petroleum ether. Reactions: Alkaline hydrates ) ,, carbonates [ dissolve, with conversion to Convolvulinic acid. Ammonia ) No pp. with metallic salts that are soluble in alcohol, except silver nitrate. Concentrated sulphuric acid, gradually pure red. (&) CONVOLVULINOL [from (a)]; crys. flexible needles ; M.P. 39°. Soluble in alcohol and ether, but with difficulty in water. (c) JALAPIN G. (Scammonin, Kayser's Para-rhodeoretin), C34H560]f, (Mayer; Spirgatis) ; amorphous, colourless, resinous ; M.P. 150° ; feebly acid reaction ; tasteless. Soluble in alcohol, ether, chloroform, amyl alcohol, and acetic acid ; with difficulty in water, benzene, and carbon bisulphide. Reactions: Alkaline hydrates | dissolve Ammonia ) Concentrated sulphuric acid, gradual pure red. (d) JALAPINOL (from preceding substance), possibly identical with (b) ; crystalline ; M.P. 62-5°. Soluble in alcohol and ether, not in water. Alkalies convert to Jalapinic acid (Convolvulinic acid ?). (e) TURPETHIN G., C34H5fiOi6 (Spirgatis) ; amorphous ; brownish-yellow, resinous ; M.P. 183°; taste gradually sharp and bitter. Acids produce sugar and (/). Soluble in alcohol; not in water or ether. Concentrated sulphuric acid, purple. (/) TURPETHOL (from above); crys. microscopic needles ; M.P. 88°; burning taste ; acid reaction. Soluble in alcohol. (g) TAMPICIN G., C34H540]4; amorphous, resinous; M.P. 130°. Decom- posed by long heating at 100°. Acids convert to Tampicolic acid, or on further treatment Tampicic acid. Soluble in alcohol and ether. Concentrated sulphuric acid, purple. § 78. CORIARIA myrtifolia ; Phytolacca;. The leaves and fruit, 6 to 9 parts in 100,000. Riban, Compt. Rendus, vols. 57 and 63. CQRIAMYRTIN G., CboH^C-jo ; crystallizes in clino-rhombic prisms;](https://iiif.wellcomecollection.org/image/b21503023_0056.jp2/full/800%2C/0/default.jpg)
