Results 81 to 90 of about 128 (107)

New Polyhydroxylated Pregnadienes from the South African Soft Coral Pieterfaurea unilobata

Journal of Natural Products, 1997
Seven pregnadiene metabolites, pregna-5,20-diene-3α,7α-diol 3α-acetate (1), pregna-5,20-diene-3β,7α-diol 7α-acetate (2), pregna-5,20-dien-3β-ol (3), pregna-5,20-diene-3α,7α,11α-triol 3α-acetate (4), pregna-5,20-diene-3α,7α, 11α-triol 3α,7α-diacetate (5), pregna-5,20-diene-3α,7α,19-triol 30, 19-diacetate (6), and pregna-5,20-diene-3α,7α,11α,19-tetrol 3α,
Denzil R. Beukes, Michael T. Davies-Coleman, Drake S. Eggleston, R. Curtis Haltiwanger, Brian Tomkowicz   +4 more
openaire   +1 more source

Structure of 21-fluoro-4,9(11)-pregnadiene-3,20-dion-17α-yl acetate, C23H29O4F

Journal of Crystallographic and Spectroscopic Research, 1990
The crystal and molecular structure of 21-fluoro-4,9(ll)-pregnadiene-3,20-dion-17a-yl acetate has been determined by X-ray diffraction methods;P212121,a=15.827(4),b=16.912(4),c=7.513(2) A,Z=4;R=0.062, (R w =0.065) for 2028 unique observed reflections.
Zdzisław Gałdecki, Paweł Grochulski, Zdzisław Wawrzak, William L. Duax, Phyllis D. Strong   +4 more
openaire   +1 more source

ChemInform Abstract: SYNTH. VON 17‐ACYLOXY‐3,5‐PREGNADIEN‐20‐ON‐DERIVATEN

Chemischer Informationsdienst. Organische Chemie, 1971
AbstractDurch selektive Reduktion mit Natriumborhydrid in Aceton in Gegenwart von Phosphormolybdänsäure werden die 3‐Hydroxy‐Derivate (II) und (V) erhalten, die durch Dehydratisierung die Pregnadien‐20‐on‐Derivate (III), (IV) und (Vii) liefern.
openaire   +1 more source

The microbial dehydrogenation of some pregnanes and allopregnanes to 1.4-pregnadienes

Archives of Biochemistry and Biophysics, 1958
T H, STOUDT, W J, McALEER, M A, KOZLOWSKI, V, MARLATT   +3 more
openaire   +2 more sources

Crystal data (I) for some pregnenes and pregnadienes

Acta Crystallographica, 1964
B. A. Haner, D. A. Norton
openaire   +1 more source

▵^4,7-PREGNADIENE-3,20-DIONE, A CORRECTION

The Journal of Organic Chemistry, 1952
Carl Djerassi, J. Romo, G. Rosenkranz
openaire   +1 more source

Structures of the Isomeric 20-Hydroxy-4,16-Pregnadien-3-ones

The Journal of Organic Chemistry, 1964
Walter R. Benn, R. Tiberi, A. L. Nussbaum   +2 more
openaire   +1 more source

The Addition of Ethanethiolic Acid to 3β-Acetoxy-5,16-pregnadien-20-one

The Journal of Organic Chemistry, 1965
R. M. Dodson, Paul B. Sollman, J. R. Deason   +2 more
openaire   +1 more source

3β-hydroxy-Δ5,16-Pregnadien-20-one from Veratrum grandiflorum

Phytochemistry, 1973
K. Kaneko, M. Watanabe, Hiroshi Mitsuhashi   +2 more
openaire   +1 more source

Notes: Synthesis of 1,4-Pregnadiene-17α,20α,21-triol-3,11-dione

The Journal of Organic Chemistry, 1959
R Beyler, Francis Hoffman, L Sarett
openaire   +1 more source