Chemical examination of Lippia scaberrima, Sonder ("Beukess boss") / by Frederick B. Power and Frank Tutin.
- Frederick Belding Power
- Date:
- [1907?]
Licence: In copyright
Credit: Chemical examination of Lippia scaberrima, Sonder ("Beukess boss") / by Frederick B. Power and Frank Tutin. Source: Wellcome Collection.
10/18 page 456
![examination of this substance is described below, as a further quan¬ tity of it was subsequently obtained. The ethereal liquid, from which the above-mentioned solid had been removed, was separated from the aqueous liquid, washed, dried and evaporated. The residue, which consisted of a dark green, sticky mass, was treated with several portions of warm, light petroleum to remove the fatty acids it contained, the residual green, resinous product mixed with a small amount of warm ether, and then allowed to stand. At the end of a few days it had deposited a quantity of a granular solid, and this was separated from the green, uncrystallizable syrup. After solution in alcohol, purification with animal charcoal, and several recrystallizations, this substance was obtained in the form of handsome, white needles, which were found to be identical with those above mentioned. This substance is not an acid, as it was unacted upon by aqueous alkalies. When boiled with acetic anhydride it gave an acetyl derivative, which was obtained in the form of an uncrystallizable syrup. It is evident, therefore, that it is of an alcoholic nature, and, as it is not iden¬ tical with any substance hitherto described, the name Lippianolx may appropriately be assigned to it. Lippianol is sparingly soluble in alcohol, and very sparingly so in ethyl acetate, but crystallizes from both these solvents in colorless needles, which melt, with decomposition, at 300-308° C. 0 0861 gave 0-2361 C02 and 0*0712 H20. C = 74*8 ; H = 9*2. 0-0873 “ 0-2391 C02 “ 0-0724 H20. C = 74-7; H = 9 2. C25H3604 requires C — 75*0; H = 9-0 per cent. C25H3804 “ C = 74 6; H = 9-5 “ “ It is evident from these analyses that lippianol possesses the empirical formula C25Hg604. It is optically active, and a determina¬ tion of its specific rotatory power gave the following result: 0*1123, dissolved in 25 c.c. of absolute alcohol, gave aD 4- o° 35' in a 2 dcm. tube, whence [a]D -f- 64-9°. 1 The designation Lippianol has been adopted in view of the fact that, as already noted, the name Lippiol ha9 previously been given by Podwissotzki {loc. cit.) to a crystalline substance of indefinite character and composition obtained by the distillation of the so-called Lippia mexicana.](https://iiif.wellcomecollection.org/image/b30611738_0010.jp2/full/800%2C/0/default.jpg)
