20069-02-7Relevant articles and documents
Synthesis of enantiomerically pure (-)-(S)-brevicolline
Mahboobi, Siavosh,Wiegrebe, Wolfgang,Popp, Alfred
, p. 577 - 579 (1999)
(-)-(S)-Brevicolline (1) and related β-carbolines were synthesized using an enantiomerically pure Michael-acceptor synthon (3). Subsequent Pictet-Spengler reaction afforded the tetrahydro-β-carboline skeleton, which, in turn, was transformed to the β-carboline by catalytic dehydrogenation.
Synthesis of Racemic and Enantiopure Forms of β-Carboline Alkaloid Brevicolline
G?rür, Funda Lidya,Horváth, Simon,Milen, Mátyás,Szabó, Tímea,Volk, Balázs
, (2022/03/01)
A new total synthesis of the pharmacologically active β-carboline alkaloid brevicolline is described. The new synthetic approach is based on a commercially available and inexpensive starting material and reagents leading to a practical synthesis of the racemic target molecule, the natural (S)-enantiomer, and its antipode. Initially, the construction of the β-carboline skeleton and functionalization at the C(4) position have been accomplished. The formation of dihydropyrrole structural unit was obtained as the result of an Au-catalyzed hydroamination reaction, which was followed by a reduction that led to the chiral intermediate. The synthetic route described here is developed to ensure the sustainable access of the racemic brevicolline in 11 steps with improved 48% overall yield compared to the previously reported methods.
SYNTHESIS AND REGIOSELECTIVE SUBSTITUTION OF 6-HALO-AND 6-ALKOXY NICOTINE DERIVATIVES
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Page/Page column 24, (2008/06/13)
The present invention provides active compounds for modulating nicotinic acetylcholine receptors and methods of making the same. The methods of preparing the active compounds utilize different intermediate compounds.
Six-step synthesis of (S)-brevicolline from (S)-nicotine
Wagner, Florence F.,Comins, Daniel L.
, p. 3549 - 3552 (2007/10/03)
A six-step synthesis of (S)-brevicolline from (S)-nicotine is reported. Regioselective trisubstitution of the pyridine ring of nicotine, followed by successive Suzuki cross-coupling and Buchwald animation reactions, afforded the enantiopure β-carboline al