73557-59-2Relevant academic research and scientific papers
Total synthesis of (±)-cis-trikentrin B via intermolecular 6,7-indole aryne cycloaddition and Stille cross-coupling
Chandrasoma, Nalin,Brown, Neil,Brassfield, Allen,Nerurkar, Alok,Suarez, Susana,Buszek, Keith R.
supporting information, p. 913 - 917 (2013/02/25)
An efficient total synthesis of the annulated indole natural product (±)-cis-trikentrin B was accomplished by means of a regioselectively generated 6,7-indole aryne cycloaddition via selective metal-halogen exchange from a 5,6,7-tribromoindole. The unaffected C-5 bromine was subsequently used for a Stille cross-coupling to install the butenyl side chain and complete the synthesis. This strategy provides rapid access into the trikentrins and the related herbindoles, and represents another application of this methodology to natural products total synthesis. The required 5,6,7-indole aryne precursor was prepared using the Leimgruber-Batcho indole synthesis.
HETEROAROMATIC COMPOUNDS AS INHIBITORS OF STEAROYL-COENZYME A DELTA-9 DESATURASE
-
Page/Page column 21, (2011/07/06)
Heteroaromatic compounds of structural formula I are selective inhibitors of stearoyl-coenzyme A delta-9 desaturase (SCD1) relative to other known stearoyl-coenzyme A desaturases. The compounds of the present invention are useful for the prevention and tr
HETEROAROMATIC COMPOUNDS AS INHIBITORS OF STEAROYL-COENZYME A DELTA-9 DESATURASE
-
Page/Page column 39, (2010/04/27)
Heteroaromatic compounds of structural formula (I) are inhibitors of stearoyl-coenzyme A delta-9 desaturase (SCD). The compounds of the present invention are useful for the prevention and treatment of conditions related to abnormal lipid synthesis and met
Alkyl Nitrite-Metal Halide Deamination Reactions. 7. Synthetic Coupling of Electrophilic Bromination with Substitutive Deamination for Selective Synthesis of Multiply Brominated Aromatic Compounds from Arylamines
Doyle, Michael P.,Lente, Michael A. van,Mowat, Rex,Fobare, William F.
, p. 2570 - 2575 (2007/10/02)
Aromatic amines undergo substitution with copper(II)bromide that is in competition with substitutive deamination when these reactions are performed with tert-butyl nitrite.Except for the exceptionally reactive 4-substituted 1-aminonaphthalenes,which undergo selective bromine substitution at the 1- and 2-positions in relatively high isolated yields,rates for oxidative bromination and substitutive deamination are not sufficiently different that selective multiple bromination can be achieved.Oxidative bromination of N,N-dimethylaniline by copper(II)bromide occurs with partial dealkylation,and nitration products are observed from reactions performed with copper(II)bromide and tert-butyl nitrite.Implications of these results for the successful utilization of copper(II)bromide/tert-butyl nitrite combinations in substitutive deamination reactions of aromatic amines are discussed.Multiply brominated aromatic compounds are produced from aromatic amines in high yield through treatment of the aromatic amine with the combination of molecular bromine and catalytic quantities of copper(II)bromide and,following a normally brief time delay,with tert-butyl nitrite.All unsubstituted aromatic ring positions ortho and para to the amino group,as well as the position of the amino group,are substituted by bromine.The only observed byproducts from use of this procedure (usually 2percent yield) are the partially brominated benzene derivatives.
