Results 131 to 140 of about 185,877 (187)

Novel heterocyclic steroidal amines

Journal of the Chemical Society D: Chemical Communications, 1969
Interrelated photochemical and thermal reaction sequences are outlined with novel stereochemical or other mechanistic features leading to derivatives of 6β,19-imino-5α- and -5β-cholestanes (I and II) and a range of aza-steroids such as (VIII) containing 2-methylpiperidine residues.
A. M. Farid, J. McKenna, J. M. McKenna, E. N. Wall   +3 more
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DERIVATIVES OF STEROIDS WITH CONDENSED HETEROCYCLES

Russian Chemical Reviews, 1967
CONTENTS I. Introduction 311 II. Five-membered heterocycles with one heteroatom 312 III. Five-membered heterocycles with two heteroatoms 314 IV. Five-membered heterocycles with three heteroatoms 319 V. Six-membered heterocycles with one heteroatom 320 VI. Six-membered heterocycles with two heteroatoms 320 VII.
A A Akhrem, Yu A Titov
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Preparation and androgenic activity of novel heterocyclic steroids

Experientia, 1970
Die Darstellung verschiedener A-Nor-5α-androstan-Verbindungen, die im A-Ring ein Schwefel-, Selen- oder Tellur-Atom haben, wird beschrieben. Sie besitzen, im Gegensatz zu den entsprechenden Oxa-Verbindungen, anabol-androgene Aktivitat. 2, 3-Dithia-5α-androstan-17β-ol-Acetat hatte ebenfalls hohe anabol-androgene Wirksamkeit.
M E, Wolff, G, Zanati
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Heterocyclic steroids: Synthesis of steroidal selena, tellura, and thia lactones of estrane series

Steroids, 1996
A successful approach in the synthesis of 3 beta-acetoxy-17a-selena-D-homo-1,3,5(10)-estratrien-17 -one (5), 3 beta-acetoxy-17a tellura-D-homo-1,3,5(10)-estratrien-17-one (6), and 3 beta-acetoxy-17a-thia-D-homo-1,3,5(10)-estratrien-17-one (7) was achieved from 3 beta-acetoxy-1,3,5(10)-estratrien-17-one (1).
A U, Siddiqui, Y, Satyanarayana, I, Ahmed, A H, Siddiqui   +3 more
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Steroids XXIII. Synthesis of Some Ring A-Fused Heterocyclic Steroids

Journal of Pharmaceutical Sciences, 1965
Several ring A-fused heterocyclic steroids, which were prepared as potential anabolic agents, are described. These include steroids with triazole, tetrahydropyrazine, and benzothiazine rings fused onto positions 2,3 of a derivative of methyltestosterone.
Norman J. Doorenbos, Conrad P. Dorn
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STEROIDS: PART I. THE SYNTHESIS OF SOME HETEROCYCLIC STEROID DERIVATIVES

Canadian Journal of Chemistry, 1960
Cyanoacetamide reacted with 3β-hydroxy-16-hydroxymethylene-5-androsten-17-one to form 1-cyano-2-hydroxy-2(16′-3′β-hydroxy-17′-oxo-5′-androstenyl) propionamide or 3-cyano-4,5-dehydro-6-hydroxy-5,6(16′,17′-3′β-hydroxy-5′-androstenyl)-2-piperidone depending on whether a catalytic or a molecular amount of piperidine was used as the basic condensing agent.
Barbara G. Ketcheson, Alfred Taurins
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PROGRESS IN THE FIELD OF THE CHEMISTRY OF STEROIDAL HETEROCYCLES

Russian Chemical Reviews, 1967
CONTENTS I. Introduction 25 II. Steroids condensed with five-membered heterocycles 25 III.
G I Zhungietu, G N Dorofeenko
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Some steroid heterocycles via enamines

Journal of the Chemical Society C: Organic, 1969
Reactions of steroid enamines with suitably substituted aromatic aldehydes have been used to synthesize steroid derivatives with a heterocyclic system joined to C-2 and C-3. Enamines from 3-keto-steroids and o-hydroxybenzaldehydes yield steroid adducts which contain the fused benzopyran nucleus.
M. S. Manhas, J. R. McCoy
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ChemInform Abstract: Synthesis of Heterocyclic Steroids

ChemInform, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
P. CATSOULACOS, G. PAIRAS
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ChemInform Abstract: SYNTHESIS OF STEROIDAL HETEROCYCLES

Chemischer Informationsdienst, 1978
AbstractReview: Ausführliches Übersichtsreferat über die Synthese von heterocyclische Ringe enthaltenden Steroid‐Systemen.
A. V. KAMERNITZKY, A. M. TURUTA
openaire   +1 more source