D-borneol

Amomum cardamomum L. A. globosum Lour. A. tsao-ko Roxb. A. villosum L. A. xanthloides Wall. Bai Dou Ku Cao Guo Shan Ren (Siam cardamon, Chinese cardamon) (seed) d-Borneol, bomeol acetate, d-camphor, linalool, nerolidol, terpene.50 Treat pyrosis, vomiting, dyspepsia, pulmonary diseases. Antitoxic, antiemetic, carminative, stomachic. 

Yu-Jing, L., Liang-Jeng, Z., Bi-Yao, L., Langtian, M., Zhao-Lun, L. and Liang-Shi, J. (1987) Studies on meipian tree (Cinnamomum burmannii physiological type) as a new source of natural d-borneol. Acta Botanica Sinica 29, 373-375. 

The simple alcohols whose trityl ethers have been prepared by treatment with trityl chloride and pyridine include, in addition to primary alcohols, 2-propanol, cyclohexanol, Z-menthol, d-borneol, and cholesterol. Trityl ethers involving the secondary hydroxyl group in glycerol are also known. - There can be no doubt, therefore, that secondary as well as primary hydroxyl groups react with trityl chloride in pyridine. 

D-Chimgin = /7-Hydroxybenzoyl-D-borneol, C17H22O3, Schmp. 155°, ao= +5° (Athanol)... 

Polymer from racemic propylene oxide Diethyl zinc-d-borneol Crystalline, 8. 0, -9. 3 Semicrystalline, 6. 1, -8 Amorphous, 4.9, + 4... 

A mixture of menthyl a-isocyanopropionate (prepared from 1-menthol), 3,4-di-methoxybenzyl bromide, and tetrahydrofuran added gradually at room temp, to a stirred suspension of NaH in the same solvent, stirred 48 hrs., methanolic 10%-HCl added to hydrolyze the isocyano group, the resulting hydrodiloride treated with alcoholic NaOH to remove the diiral agent, and the product isolated as the hydrodiloride -> (-)-a-methyl-(3,4-dimethoxy)phenylalanine hydrodiloride. Y 85% based on menthyl a-isocyanopropionate optical purity ca. 10%. F. e. with d-borneol as chiral agent s. M. Suzuki et al., Chem. Ind. 1972, 687. 

Cumarin is present, in traces only, and fnrfurol, an aldehyde which is probably valeric aldehyde, amyl alcohol, eihyl-n-amyl-ketone, and d-borneol are all consiiipuects of the oil, but in very small amounip. 

The occurrence of the gentiobioside of the (-f) nitrile in the fruits of Prunus laurocerasus, and of the glucoside of the dl nitrile in the leaves of the same plant, is suggested by Kuhn to be most probably a reflection of greater solubility differences between the gentiobioside diastereoisomerides than between those of the glucoside. One is tempted to speculate whether a similar reason may underlie the occurrence of (+)- and (—)-pinene in different parts of one and the same plant, and the occurrence of both (—)- and d -borneol in valerian oil (128). 

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