50. S t
е г
1
i
n g E. C., BogertM. Т. Synthesis of 12-methylperhydroretene
(abietane) and its non-identity with fichtelite. —
«J.
Org. Chem.», 1939, 4, p. 20—28.
51. S i m
о
n s e n J. L., Barton D. H. R. The terpenes, vol. Ill, p. 337.
Cambridge University Press, London, 1952.
52. RuzickaL., BalasF., Sehinz H. Zur Kenntnis des Fichtelits und
der Stereochemie hydrierter Phenanthrensderivate. — «Helv. Chim. Acta», 1923, 6, p. 692—
697.
53. RuzickaL., Waldmann E. Zur Konstitution des Fichtelits. — «Helv.
Chim. Acta», 1935, 18, p. 611—612.
54. Burgstahler A. W., Marx J. N. The synthesis and stereochemistry
of fichtelite. — Tetrahedron Letters, 1964, p. 3333—3338.
55. Soltys A. Three compounds extracted from steyrian lignite. — «Monatsh.
Chem.», 1929, 53—54, S. 185—186.
56. Briggs L. H. The identity of a-dihydrophyllocladene with iosene. — «J.
Chem. Soc.», 1937, p. 1035—1036.
57. Ruzicka L., Hosking J. R. Uber die Agathen-disaure, die krystalli-
•sierte Hartzzaure C20H30O4 des Kaurikopals, des Hart- und des Weichmanilakopals. — «Ann.
Chem.», 1929, 469, p. 147—192.
58. Cason J., L i a u w K. L. Characterization and synthesis of a monocyclic eleven-
carbon acid isolated from a California
petroleum.
—
«J.
Org. Chem.»,
1965, 30,
p. 1763—1766.
59. Boiteau P., Pasich B., Racoto Ratsimamanga A. Les Triterpenoides
en physiologie vegetale et animale. Gauthier-Villars, Paris, 1964.
60. S i m
о
n s e n J., Ross W. С. J. The terpenes, vol. IV. Cambridge Uni-
versity Press, London, 1957.
61. Hills I. R., Whitehead E. V. Triterpanes in optically active petro-
leum distillates. — «Nature», 1966, 209, p. 977—979.
62. S
i
m 0 n s e n J., R 0 s s W. C. J. In [60], p. 289.
63. Mair B. J. Terpenoids, fatty acids and alcohols as source materials for petro-
leum hydrocarbons. — «Geochim. Cosmochim. Acta», 1964, 28, p. 1303—1321.
64. M
ii
n
с
h W. Uber die Harze der braunkohle. Die Sterine des Harzbitumens. —
«Oel und Kohle», 1934, 2, S. 564-567.
65. L a h i r
i
A. Chromatographic analysis of coal bitumen. — «Fuel», 1945, 24,
p. 66—73.
66. B e r g m a n n W. Geochemistry of lipids. In [1], p. 503—542.
67. CarruthersW., Cook J. W. The constituents of high-boiling petroleum
distillates. I. Preliminary studies. — «J. Chem. Soc.», 1954, p. 2047—2052.
68. Barton D. H. R., CarruthersW., Overton K. H. Tirterpe-
noids. (XXI). A triterpenoid lactone from petroleum. —
«J.
Chem. Soc.», 1956, p. 788.
69. Ikan R., McLean J. Triterpenoids from lignite. — «J. Chem. Soc.»,
1960, p. 893—894.
70. McLeanJ., Rettie G. H., Spring F. S. Tirterpenoids from peat.
Chem. Ind. (London), 1958, p. 1515—1516.
71. IkanR., Kashman J. Steroids and triterpenoids of Hula peat as compa-
red to other humoliths. — «Israel J. Chem.», 1963, 1, p. 502—508.
72. SakabeT., SassaR. An aromatic hydrocarbon isolated from coal bi-
tumen. — «Bull. Chem. Soc. Japan», 1952, 25, p. 353—355.
73. Ouchi K., I m u t a K. The analysis of benzene extracts of Yubari coal.
I. Chromatographic fractionation of the petroleum ethermethanol-soluble portion and UV-
and IR-spectra of the fractions. —
«Fuel».,
1963, 42, p. 25—35.
74. Erdman J. G. Some chemical aspects of petroleum genesis as related to
the problem of source bed recognition. — «Geochim. Cosmochim. Acta», 1961, 22, p. 16—36.
75. B u r
1
i n g a m e A. L., HaugP., BelskyT., C a 1 v i n M. Occur-
rence of biogenic steranes and pentacyclic triterpanes in an Eocene shale (52 million years)
and in an early Preeambrian shale (2,7 billion years); A preliminary
report.
—
«Proc.
Nat.
Acad. Sci. U. S.», 1965, 54, p. 1406—1412.
75a. Hills I. R., Whitehead E. V., Anders D. E., CumminsJ. J.,
R
о
b i n s
о
n W. E. An optically active triterpane, gammacerane in Green River, Colo-
rado, oil shale bitumen. Chem. Commun., 1966, p. 752 —754.
76. Burgstahler A. W. A contribution to the anthrasteroid problem. —
«J. Amer. Chem. Soc.», 1957, 79, p. 6047—6050.
77. Slates H. L., W e n d 1 e r N. L. Realdoltransformations of 5[5 methyl-9a,
10a-dihydroxy-19-norcholestane-3,6-dione. — «Experimentia», 1961, 17, p. 161.
78. Jeffrey L. M. Lipids in sea water. —
«J.
Amer. Oil Chem. Soc.», 1966, 43,
p. 211—214.
79. Schwendinger R. B., Erdman J. G. Sterols in recent aquatic
sediments. — «Science», 1964, 144, p. 1575—1576.
'315