Results 11 to 20 of about 799 (135)

Synthesis and biological testing for pesticidal activity of 8-azasteroids

Proceedings of Universities. Applied Chemistry and Biotechnology, 2022
The aim of the present study is the synthesis and testing for pesticidal activities of 2,3-dimethoxy16,16-dimethyl-D-homo-8-azagona-1,3,5(10),13-tetraene-12,17а-one and 2,3-dimethoxy-16,16-dimethyl-dhomo-8-azagona-1,3,5(10),13-tetraene-12-imino-17а-one ...
A. N. Pyrko
semanticscholar   +1 more source

Synthesis of 5-azaandrostane-3β, 17β-diol protected at the 17-hydroxyl group [PDF]

Journal of the Serbian Chemical Society, 2004
In the present paper, the preparation of 3β-hydroxy-17β-dimethyl-tert-butylsilyloxy- 5-azaandrostane (15) in fourteen steps is described. B-nor-17-oxoandrost- 5-en-3β-yl acetate (1)1,2 was used as the starting material, which was transformed to the key ...
Pavlović Vladimir D., Dabović Milan M., Martinović Saša, Lorenc Ljubinka B., Kalvoda Jaroslav   +4 more
doaj   +1 more source

Retracted: Deceptology in cancer and vaccine sciences: Seeds of immune destruction‐mini electric shocks in mitochondria: Neuroplasticity‐electrobiology of response profiles and increased induced diseases in four generations – A hypothesis

Clinical and Translational Medicine, Volume 10, Issue 8, December 2020., 2020
Schematic representation of cause, exacerbation and consequence of vaccines‐induced diverse immune disorders in immune‐responsive or immune‐privileged tissues. It depicts that vaccination of the unborn, alter biology of trophoblast‐embryo‐fetus‐placenta and orderly growth and development affecting epithelial‐mesenchymal transition, proper expression of
Mahin Khatami
wiley   +1 more source

Synthesis, Spectral Characterization, and In Vitro Cytotoxicity of N‐2′‐Hydroxyethyl‐Substituted Azacholestanes Prepared from 6‐Oxocholestanes by Modified Schmidt Reaction

Journal of Spectroscopy, Volume 2013, Issue 1, 2013., 2013
The present paper reports the synthesis and spectroscopic characterization of few N‐2′‐hydroxyethyl‐substituted azacholestanes using BF3‐OEt2, TiCl4, SnCl4, and H2SO4 as catalysts in moderate yields by a modified version of Schmidt reaction. A notable feature is the passivity of SnCl4 in case of 3β‐acetoxy‐N‐2′‐hydroxyethyl‐6‐aza‐B‐homo‐5α‐cholestan‐7 ...
Shahab A. A. Nami, Suraiya Khan, Mahboob Alam, M. Mushfiq, Dong-Ung Lee, Soonheum Park, Mircea Cotlet   +6 more
wiley   +1 more source

Synthesis of 5-azaandrostane-3b,17b-diol protected at the 17b-hydroxyl group [PDF]

Journal of the Serbian Chemical Society, 2004
In the present paper, the preparation of 3b-hydroxy-17b-dimethyl-tert-butylsilyloxy-5-azaandrostane (15) in fourteen steps is described. B-nor-17-oxoandrost-5-en-3b-yl acetate (1) was used as the starting material, which was transformed to the key ...
JAROSLAV KALVODA, LJUBINKA B. LORENC, SASA MARTINOVIC, MILAN M. DABOVIC, VLADIMIR D. PAVLOVIC   +4 more
doaj  

Synthesis of 6-azaprogesterone and 19-hydroxy-6-azasteroids.

Steroids, 2013
19-Hydroxy-6-azapregnanes were obtained from pregnenolone via a 7-azido-5-oxo-6-nor-5,7-secopregnane intermediate. The 6-azapregnane core was built in good yield in a straightforward way from the secosteroid, by means of a Staudinger (aza-Wittig ...
M. D. Martínez, V. Edelsztein, F. Durán, P. H. Di Chenna, G. Burton   +4 more
semanticscholar   +1 more source

Synthesis and reactions of 4-azasteroidal alkylating agents: approaches to related 5-azasteroids

, 1986
Bibliography: p. 178-203.
openaire   +2 more sources

Linear Relationships between the Ligand Binding Energy and the Activation Energy of Time-dependent Inhibition of Steroid 5α-Reductase by Δ1-4-Azasteroids*

Journal of Biological Chemistry, 2001
The inhibition of steroid 5α-reductase (5AR) by Δ1-4-azasteroids is characterized by a two-step time-dependent kinetic mechanism where inhibitor combines with enzyme in a fast equilibrium, defined by the inhibition constant K i , to form an initial ...
G. Tian, C. Haffner
semanticscholar   +1 more source

Skeletal metalation of lactams through a carbonyl-to-nickel-exchange logic. [PDF]

Nat Commun, 2023
Zhong H, Egger DT, Gasser VCM, Finkelstein P, Keim L, Seidel MZ, Trapp N, Morandi B.   +7 more
europepmc   +1 more source

Azoarene activation for Schmidt-type reaction and mechanistic insights. [PDF]

Nat Commun, 2022
Meng FT, Wang YN, Qin XY, Li SJ, Li J, Hao WJ, Tu SJ, Lan Y, Jiang B.   +8 more
europepmc   +1 more source