Results 91 to 100 of about 255 (109)

Crystal Structure of Ethoxidine, A Synthetic Quaternary Benzo[c]phenanthridine

Journal of Chemical Crystallography, 2011
The complete structure of N-methyl-12-ethoxy-2,3,8,9-tetramethoxybenzo[c]phenanthridinium methylsulfonate salt 1, also named ethoxidine, was established by a single-crystal X-ray analysis. The crystal is triclinic, space group $$ P\overline{1}$$ with a =
Helesbeux, Jean-Jacques, Vanquelef, Enguerran, Guillon, Jean, Léger, Jean-Michel, Duval, Olivier   +4 more
openaire   +1 more source

ChemInform Abstract: TRANSFORMATION OF PROTOBERBERINES INTO BENZO(C)PHENANTHRIDINES. A NOVEL AND EFFICIENT SYNTHESIS OF ANTITUMOR BENZO(C)PHENANTHRIDINE ALKALOIDS, FAGARONINE AND NITIDINE

Chemischer Informationsdienst, 1985
AbstractAus Tetrahydropseudoberberin (Ia) bzw. O‐Benzyl‐discretin (Ib) werden über (II) die Ammoniumsalze (III) hergestellt, die durch Hofmann‐Abbau zu (IV) gespalten werden.
M. HANAOKA, H. YAMAGISHI, M. MARUTANI, C. MUKAI   +3 more
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A versatile synthesis of fully aromatic benzo[c]phenanthridine alkaloids

Tetrahedron, 1998
Abstract A versatile new approach for the synthesis of benzo[ c ]phenanthridine alkaloids is described and is illustrated by the preparation of eight different alkaloids. The key steps are Smiles rearrangements, which allow easy access to 2-bromo-1-naphthylamines from 2-bromo-1-naphthols, and the attachment of the D-ring unit by Suzuki coupling.
Graham R. Geen, Inderjit S. Mann, M. Valerie Mullane, Alexander McKillop   +3 more
openaire   +1 more source

ChemInform Abstract: A NEW SYNTHESIS OF BENZO(C)PHENANTHRIDINE DERIVATIVE

Chemischer Informationsdienst, 1977
AbstractDas Methylhomophthalimid (I) ergibt mit dem Dimethoxyphenacylbromid (II) in Gegenwart von Natrium= äthylat das Homophthalimid (IIIa), das über Palladiumkohle zu (IIIb) hydriert wird.
H. IIDA, K. TAKAHASHI, T. KIKUCHI
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ChemInform Abstract: Approaches to the Synthesis of Benzo(c)phenanthridines.

ChemInform, 1990
AbstractThe published reaction sequence to produce (II) is repeated (only given in a scheme without any details).
G. BLASKO, G. A. CORDELL
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Synthesis and evaluation of new 6-amino- substituted benzo[c]phenanthridine derivatives

Journal of Medicinal Chemistry, 1993
Different 7,8,9,10-tetrahydrobenzo[c]phenanthridin-6(5H)-ones (10a-e) were prepared by using a one-pot procedure which includes the preparation of various 6- and 7-alkoxy-1-naphthylisocyanates from 1-naphthylamines and triphosgene, followed by addition of 1-N-morpholino-1-cyclohexenes, and cyclization of the resulting amides upon heating in the ...
Y L, Janin, A, Croisy, J F, Riou, E, Bisagni   +3 more
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New Hydroxylated Benzo[c]phenanthridine Alkaloids from Eschscholtzia californica Cell Suspension Cultures

Journal of Natural Products, 1990
From cell cultures of Eschscholtzia californica and their spent medium, three new benzo[c]phenanthridine alkaloids--namely 10-hydroxysanguinarine [2a], 12-hydroxychelirubine [4a], and 10-hydroxychelerythrine [7a]--and two new dihydrobenzo[c]phenanthridine alkaloids--10-hydroxydihydrosanguinarine [2b] and 12-hydroxydihydrochelirubine [4b]--together with
T, Tanahashi, M H, Zenk
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One-Pot Synthesis of Benzo[c]phenanthridines

Synfacts, 2023
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Electrochemical and thermal studies of some quaternary benzo(c) phenanthridine alkaloids.

Acta Universitatis Palackianae Olomucensis Facultatis Medicae, 1990
The conditions of the electrochemical reduction and oxidation as well as those of thermal demethylation of quaternary benzo(c)-phenanthridine alkaloids namely chelerythrine (1), sanguinarine (2), and fagaronine (3) were studied. Differences in their electrochemical and thermal behavior are correlated with the results obtained from biotransformation ...
J, Lasovský, D, Walterová, J, Smidrkal, R, Pastorek, V, Simánek   +4 more
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A New Synthesis of Benzo[c]phenanthridine Derivative

HETEROCYCLES, 1976
Hideo Iida, Kohkichiro Takahashi, Toyohiko Kikuchi   +2 more
openaire   +1 more source