RECENT DEVELOPMENTS IN ESSENTIAL OILS 327 (129) (130) (131) (132) (133) (134) (135) (136) (137) (138) (139) (140) (141) (142) (143) (144) (145) (146) (147) (148) (149) (150) (151) (152) (153) 054) (155) (156) (157) Platmer, P., Fiirst, A., Eschenmoser, A., Keller, W., Klaui, H., Meyer, S., and Rosner, M., "Die Konstitution des Cedrens," Ibid., 36, 1845 (1953). Platther, P., Ftirst, A., Meyer, S., and Keller, W., "Synthese einiger Abbauprodukte des Cedrens," Ibid., 37, 266 (1954). Plattnet, P. A., Heilbronner, E., Schmid, R. W., Sandtin, R., and Fiirst, A., "The Structure of Lactaroviolin," Chemistry & Industry, 1202 (1954). Pommer, H., "Ueber den Stand der Forschung auf dem Gebiet der Azulene," ,4ngew. Chem., 62, 281 (1950). Post, A., "Chromatography and Its Application to the Essential Oil and Cosmetic Industry," •e. Soc. Cosmetic Chem., 5, 23 (1954). Ramage, G. R., Whitehead, R., "Oxides from the Caryophyllenes," •e. Chem. Soc., 4336 (1954). Ramage, G. R., Whitehead, R., and Wilson, B., "The Structure of Caryophyllene Nitro- site," Ibid., 4341 (1954). Rao, A. S., Dutt, K. B., Dev, S., and Guha, P. C., "Sesquiterpenes of the Essential Oil of Lansium annamalayanum Bedd. Structure of a-Chigadmarene," •e. Indian Chem. $oc., 29, 620 (1952). Reitsema, R. H., "Characterization of Essential Oils by Chromatography," ,4hal. Chem., 26, 960 (1954). Riniker, B., Kalvoda, J., Arigoni, D., Ffirst, A., Jeger, O., Gold, A.M., and Woodward, R. B., "A Direct Stereochemical Correlation of a Sesquiterpene Alcohol with the Ster- oids," •e. ,4m. Chem. $oc., 76, 313 (1954). Robertson, J. M., and Todd, G., "The Structure of/3-Caryophyllene Alcohol Chloride and Bromide. An X-ray Determination," Chemistry & Industry, 437 (1953). Roy, J. K., "Synthesis of/g-Cyperone," Ibid., 1393 (19/54). Ruzicka, L., Huber, K., Platther, P., Deshapande, S.S., and Studer, S., "Zur Konstitu- tion des Caryophyllengemisches. Abbau des Dihydrocaryophyllens," Hdv. Chim. dcta, 22, 716 (1939). Rydon, H. N., "The Synthesis of cis- and trans-dLNorcaryoph¾11enic Acids and of Dehydronorcaryophyllenic Acid," •e. Chem. $oc., 593 (1936). Sale, J. W., et al., "Analysis of Lemon Oils," •e. ,4ssoc. Q•qc. ,4gr. Chemists, 36, 112 (1953). Simonsen, Sir John, and Barton, D. H. R., "The Terpenes," Vol. III, 2nd edition, Cam- bridge, University Press (1952). S6rensen, N. A., and Hougen, F., "The Azulene from Oil of Elemi," ,4cta Chem. $cand., 2, 447 (1948). •orm, F., "Ober einige Fortschritte der Chemie der Sesquiterpene," ColL Czech. Chem. Comm., 19, Supplement 2, 69 (1954). norm, F., Bene•ovft, V., und Herout, V., "(•ber die Struktur des Lactarazulens und des Lactaroviolins," Ibid., 19, 357 (1954). norm, F., Bene•ovft, V., Krupif•ka, J., •neberk, V., Dolej•, L., Herout, V., and Sicher, J., "The Structure of Lactaroviolin," Chemistry & Industry, 1511 (1954). norm, F., and Dolej•, L., "Proof of a Nine-membered Ring in Caryophyllene," Coil. Czech. Chem. Comm., 16, 650 (1951). norm, F., Dolej•, L., Knessl, O., and Pllva, J., "On a Bicyclic Sesquiterpene and a New Azulene from the Oil of Pogostemon patchouli P.," Ibid., 15, 82 (1950). norm, F., Dolej•, L., and Pllva, J., "A Note on the Constitution of/S-Caryophyllene," Ibid., 15, 186 (1950). norm, F., Gut, J., Hlavni•ka, J., Ku(:era, J., and •ediv.•, L., "The Total Synthesis of S-Guaiazulene," Ibid., 16, 168 (1951). norm, F., Herout, V., and Takeda, K., "On the Identity of Lindazulene and Chamazu- lene," Ibid., 19, 186 (1954). norm, F., Holub, M., S•'kora, V., Mleziva, J., Streibl, M., Pllva, J., Schneider, B., and Herout, V., "Sesquiterpenic Hydrocarbons from Oil of Sweet Flag," Ibid., 18, 512 (1953). norm, F., Mleziva, J., Arnold, Z., and Pllva, J., "On the Sesquiterpenes from the Essen- tial Oil of Hops," Ibid., 14, 699 (1949). , norm, F., Novf•k, J., and Herout, V., "The Composition of Chamazulene. Preliminary Communication," Ibid., 18, 527 (1953). norm, F., Streibl, M., Jarolim, V., Novotn.•, L., Dolej•, L., and Herout, V., "Total Synthesis of 1,1,4,8-Tetramethylcydoundecane. Proof of the Eleven-membered Ring in Humulene," Ibid., 19, 570 (1954).

328 (lS8) (159) (16o) (161) (162) (163) (164) (165) (166) (167) (168) (169) (170) (171) (172) (173) (174) (17S) (176) (177) (178) (179) (180) (181) (182) (183) (184) (185) JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS •orm, F., Streibl, M., |arollm, V., Novotn:p, L., Dolej•, L., and Herout, V., "Synthesis of 1,1,4,8-Tetrameth3 icydoundecane (Humulane). Proof of the Eleven-membered Ring in Humulene," Chemistry & Industry, 252 (1954). •orm, F., Streibl, M., Pliva, J., and Herout, V., "A Contribution to the Constitution of Humulene," Coll. Czech. Chem. Comm., 16, 639 (1951). •orm, F., Vereõ, K., and Herout, V., "The Constitution of Calamenene," Ibid., 18, 106 (1953). •orm, F., Vran•,, M., and Herout, V., "Composition of the Oil of Populus balsam•fera," Chem. Listy, 46, 364 (1952). •orm, F., Zaoral, M., and Herout, V., "On the Constitution of Natural Bisabolol and Bisabolol Monoxide from Matricaria Oil," Coll. Czech. Chem. Comm., 18, 116 (1953). (In Russi,a•.) Stahl, E., Ober das Cham-Azulen und dessen Vorstufen, II. Cham-Azulencarbons//ure aus Kamille," Chem. Ber., 87, 505 (1954). Stahl, E., "Ober das Cham-Azulen und dessen Vorstufen, III. Zur Konstitution der Cham-Azulencarbons•/ure," Ibid., 87, 1626 (1954). Stork, G., and Breslow, R., "The Structure of Cedrene," 5 t. Am. Chem. Soc., 75, 3291 (1953). Stork, G., and Clarke, F. H., Jr., "The Total Synthesis of Cedrol and Ced- rene," Ibid., 77, 1072 (1955). S•,kora, V., •ern•,, J., Herout, V., and •orm, F., "Synthesis of Elemane (1-Methyl-1- ethyl-2,4-diisopropylcyclohexane)," Col•l. Czech. Chem. Comm., 19, 566 (1954). S•,kora, V., Herout, V., Pliva, J., and Sorm, F., "Contribution to the Constitution of Elemol," Ibid., 19, 124 (1954). Syndicat National des Fabricants et Importateurs d'Huiles Essentielles et Produits Aromatiques Naturels de Grasse: "M•thodes et constantes analytiques des huiles essentielles," Grasse (A.-M.), France 1954. (Prepared under the direction of Igolen Crabalona, Daumas, Benezet, and Teisseire.) Takeda, K., Kubota, T., and Nagata, W., "Synthesis of 1,4-Dimethyl-7-ethylnaphtha- lene," Pharm. Bull. 5tapan, I, 241 (1953). Takeda, K., Nagata, W., "Components of the Root of Lindera strychnifolia. Azulenes Isolated fro• Linderene by Zinc-dust Distillation,"-Ibid., I, 164 (1953). Takeda, K., Sorm, F., and Herout, V., "The Identity of Lindazulene and Chamazulene," 5t. Pharm. Soc. 5tapan, 74, 700 (1954). Tedin, H. V., Cominco, Compafiia Industrial y Comercial, Buenos Aires, Argentina. Private communication. Teitelbaum, C. L., "New Analytical Techniques for Essential Oil and Flavor Re- search," ,4m. Pe•umer Essent. Oil Rev., 67, 28 (Jan., 1956). Thomas, H.-K., "Proc•d•s R•cents de Synthbse des Azul•nes," Ind. pa•um., 11, No. 1, 11 (1956). Treibs, W., "Das Germacrol, ein azulenbildendes Sesquiterpen-oxyd aus Geranium61," Liebigs ,'Inn. Chem., 576, 116 (1952). Treibs, W., "Der Patchoulialcohol, ein tricyclischer Azulen-bildner," Ibid., 564, 141 (1949). Treibs, W., "Ober das Calameon," Chem. Ber., 82, 530 (1949). Treibs, W., "Ober den •-Kessylolkohol, ein nattirliches azulenbildendes Oxy-sesquiter- pen-oxyd," Liebigs ,'Inn. Chem., 570, 165 (1950). .T. reibs, W., and Barchet, H.-M., "Das Aromadendren, sein chemischer Bau und seine Uberftihrung in 5 Azulene," Ibid., $66, 89 (1950). Treibs, W., Kirchhof, W., und Ziegenbein, W., "Fortschritte der Azulenchemie seit 1950," Fortschr. Chem. Forsch., 3, 334 (1955). Ukita, T., "Structure of Kessoglycol," 5t. Pharm. Soc. 5tapan, 64, 285 (1944) Ibid., 65, 458 (1945). U.S. Dept. Agriculture, Agricultural Marketing Service, Portland, Oregon. 1955 Annual Summary Report, Mint Oil. Wilks, P. A., "Infrared Analysis for Cosmetics," ,4m. Pe•umer Essent. Oil Rev., 62, 181 (1953). Woodward, R. B., and Yates, P.•"The Stereochemistry of the Santonic Acids," Chem- istry & Industry, 1391 (1954). Zeiss, H. H., and Arakawa, M., "The Structure of Longifolene. The Longifolic Acids," 5t. ,'lm. Chem. Soc., 76, 1653 (1954).