Results 121 to 130 of about 322 (164)
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Ring D 16,17‐Heteroanellated Estranes
ChemInform, 2007AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Goreti Ribeiro Morais +6 more
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11.beta.-Nitrate estrane analogs: potent estrogens
Journal of Medicinal Chemistry, 1989Various estrane derivatives 1 reacted with cerium ammonium nitrate (CAN) selectively and efficiently to provide 9 alpha,11 beta-defunctionalized derivatives 2, which were subsequently deoxygenated at C-9 with triethylsilane/boron trifluoride etherate to the desired target 11 beta-nitratoestranes 3a, 3b, and 5.
R H, Peters +4 more
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C7‐Substituted Estranes and Related Steroids
ChemInform, 2006AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Goreti Ribeiro Morais +5 more
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Journal of Chemical Research, 1997
C-16-substituted steroids having an unsaturation in the side chain have been synthesized by sequential Arnold–Vilsmeier and Wittig reactions, subsequent photochemical studies showing the formation of either a dimeric structure or the occurrence of E/Z-isomerization; for one example, treatment with H 2 over Pd–C led to full reduction of the ...
Thies Thiemann +4 more
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C-16-substituted steroids having an unsaturation in the side chain have been synthesized by sequential Arnold–Vilsmeier and Wittig reactions, subsequent photochemical studies showing the formation of either a dimeric structure or the occurrence of E/Z-isomerization; for one example, treatment with H 2 over Pd–C led to full reduction of the ...
Thies Thiemann +4 more
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Tetrahedron, 1961
Abstract Various 3,17-oxygenated isomeric estrane derivatives have been synthesized as possible metabolites of 19-norsteroids. Methods employed to establish configurations are described and biological data on some of the more pertinent compounds is presented.
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Abstract Various 3,17-oxygenated isomeric estrane derivatives have been synthesized as possible metabolites of 19-norsteroids. Methods employed to establish configurations are described and biological data on some of the more pertinent compounds is presented.
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Tetrahedron, 1958
Abstract Three of the four possible ring A/B isomeric estrane-17-ol-3-ones and their corresponding acetates, benzoates and diones were prepared for the purpose of biochemical studies. The positions of the hydrogens on C5 and C10 of these compounds have been assigned. One of the estrane-3,17-diones prepared was, according to the double melting points,
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Abstract Three of the four possible ring A/B isomeric estrane-17-ol-3-ones and their corresponding acetates, benzoates and diones were prepared for the purpose of biochemical studies. The positions of the hydrogens on C5 and C10 of these compounds have been assigned. One of the estrane-3,17-diones prepared was, according to the double melting points,
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Caractéristiques hydrodynamiques d'un estran à forte sédimentation
Canadian Journal of Civil Engineering, 1990In the St. Lawrence estuary (Canada), tidal flats localized in the area of saline intrusion are covered with up to 30 cm of fine sedimentation during July, August, and September. This sedimentation is the result of waters coming from the turbidity zone. The upper half of the tidal flats are covered with a tidal marsh. This vegetation is very important
Jean-Pierre Troude +1 more
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Synthesis of some 17-substituted 3,(10)-ethano-5.alpha.-estranes
Journal of Organic Chemistry, 1973F M, Hauser, A, Philip, F I, Carroll
exaly +3 more sources
Canadian Journal of Chemistry, 1966
The configurations at the 3 positions of 3β-hydroxy-4-oxa-5α-estrane and of 3α, 17β-dihydroxy-4-oxa-5α-estrane were assigned from a study of the anomerizations of these compounds in aqueous tetrahydrofuran. 3α-Chloro-4-oxa-5α-estrane solvolyzed in alkaline methanol to give a mixture of 3α- and 3β-methoxy-4-oxa-5α-estrane, the former predominating. The
J. T. Edward, J.-M. Ferland
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The configurations at the 3 positions of 3β-hydroxy-4-oxa-5α-estrane and of 3α, 17β-dihydroxy-4-oxa-5α-estrane were assigned from a study of the anomerizations of these compounds in aqueous tetrahydrofuran. 3α-Chloro-4-oxa-5α-estrane solvolyzed in alkaline methanol to give a mixture of 3α- and 3β-methoxy-4-oxa-5α-estrane, the former predominating. The
J. T. Edward, J.-M. Ferland
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