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J. Fajkoš

Observed names: J Fajkos, J. FAJKOS, J. Fajkos, Jan Fajkos, Jan Fajkos̆, Jan Fajkoš
OpenAlex ID: A5084906891
Mass Spectrometry in Structural and Stereochemical Problems. LXV.1 Synthesis and Fragmentation Behavior of 15-Keto Steroids. The Importance of Interatomic Distance in the McLafferty Rearrangement2
1965 · Carl Djerassi, G. von Mutzenbecher, et al. · Journal of the American Chemical Society · 81
Fungal sex hormones. The synthesis of (±)-7(t),9(t)-trisporic acid B methyl ester. The stereochemistry at C-9 of the trisporic acids
1971 · J. A. Edwards, V. Schwarz, et al. · Journal of the Chemical Society D Chemical Communications · 24
On steroids. XV. The configuration of some 16-bromo derivatives of androstane
1955 · J. Fajkoš · Collection of Czechoslovak Chemical Communications · 23
On steroids. XL. Reduction of steroidal ketones with lithium tri-tert.-butoxyaluminohydride
1959 · J. Fajkoš · Collection of Czechoslovak Chemical Communications · 21
1,3‐Dipolar addition of formonitrile oxide, and hydroxyiminoacetonitrile oxide to some olefins. The synthesis of isoxazolidino[2,3‐b]‐Δ3‐l,2,5‐oxadiazolines
1974 · J. Fajkos, J. A. Edwards · Journal of Heterocyclic Chemistry · 14
Chemical synthesis of 15β-hydroxytestosterone and its derivatives using a (4-methoxyphenyl)methyl protecting group
1996 · Ivan Černy, Jan Fajkoš, et al. · Steroids · 13
On steroids. XXXV. The synthesis of epimeric 16-bromo derivatives of androsterone and testosterone
1959 · J. Fajkoš, F. Šorm · Collection of Czechoslovak Chemical Communications · 13
Biological activity of various steroids including B-norsteroids
1964 · R.I. Dorfman, J. Fajkoš, et al. · Steroids · 12
On steroids. LXXII. Fission of the 5α,6α-epoxyderivatives in the B-norsteroid series
1963 · J. Joska, J. Fajkoš, et al. · Collection of Czechoslovak Chemical Communications · 12
Chair-boat equilibria in fused cyclohexane systems
1962 · M. Svoboda, M. Tichý, et al. · Tetrahedron Letters · 12
On steroids. XXXIX. Epimeric 2- and 4-bromo derivatives of androstan-3-one
1959 · J. Fajkoš, F. Šorm · Collection of Czechoslovak Chemical Communications · 12
Deuterium and tritium labeling with the zinc-sodium iodide method
1983 · Frantisek Turecek, Karel Veres, et al. · The Journal of Organic Chemistry · 11
Simmons-Smith methylenation of the 5,6-double bond in 19-hydroxylated steroids
1979 · Jan Fajkoš, Jiří Joska · Collection of Czechoslovak Chemical Communications · 9
Synthesis of (19E)-17β-hydroxy-3-oxoandrost-4-en-19-al 19-(O-carboxymethyl)oxime
1990 · Jan Fajkoš, Vladimír Pouzar, et al. · Collection of Czechoslovak Chemical Communications · 8
Steroids with modified ring A or B: Screening for potential antiandrogenic and synandrogenic activity
1980 · L. Stárka, R. Hampl, et al. · Journal of Steroid Biochemistry · 8
Screening for antiandrogenic activity of some 4,5-cyclo-A-homo-B-nor-androstane derivatives
1977 · L. Stárka, Jarmila S̆ulcová, et al. · Journal of Steroid Biochemistry · 8
On steroids. LVIII. Some analogues of androgens substituted in position 7
1961 · J. Joska, J. Fajkoš, et al. · Collection of Czechoslovak Chemical Communications · 8
On steroids. CXLIII. B-Homosteroids. VI. Simmons-Smith methylenation of Δ5-steroids
1972 · L. Kohout, J. Fajkoš · Collection of Czechoslovak Chemical Communications · 7
On steroids. LX. Microbial oxygenation of B-norsteroids
1961 · Ž. Procházka, J. Fajkoš, et al. · Collection of Czechoslovak Chemical Communications · 7
On steroids. L. Analogues of androgens with the B-norsteroid skeleton
1960 · J. Joska, J. Fajkoš, et al. · Collection of Czechoslovak Chemical Communications · 7
Synthesis of (15E)-17β-hydroxyandrost-4-ene-3,15-dione 15-(O-carboxymethyl)oxime, a potential hapten for testosterone immunoassays
1996 · Jan Fajkos̆, Ivan C̆erný, et al. · Steroids · 6
Simmons-Smith methylenation of Δ5-steroids
1972 · L. Kohout, J. Fajkoš, et al. · Tetrahedron Letters · 6
On steroids. CXII. 5,7-Cyclosteroids. I. The Simmons-Smith methylenation of Δ5-B-norsteroids
1968 · J. Joska, J. Fajkoš, et al. · Collection of Czechoslovak Chemical Communications · 6
On steroids. XLI. Epimeric 2-bromo and 4-bromo derivatives of cholestan-3-one
1960 · I. Malunowicz, J. Fajkoš, et al. · Collection of Czechoslovak Chemical Communications · 6
On steroids. IX. Synthesis of 3-hydroxy-16-ketoandrostane and of 3,16-diketoandrostene-(4)
1954 · J. Fajkoš, F. Šorm · Collection of Czechoslovak Chemical Communications · 6
Works count: 177
Citation count: 565
H-index: 11
I10-index: 12
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