Nitration of isoquinoline and phthalazine has been successfully demonstrated using a novel process which does not require strong acids. In this study, nitration of isoquinoline was repeated and the method applied to 1-nitroisoquinoline and the azaaromatics quinoline, quinazoline, quinoxaline and pyridine. Nitration of only quinoline was observed, with a product yield lower than that reported fo...

In the title centrosymmetric binuclear Cu(II) complex, [Cu(2)(C(8)H(7)O(2))(4)(C(9)H(7)N)(2)], the two Cu cations are bridged by four carboxyl-ate groups of the phenyl-acetate anions; each Cu cation is further coordinated by an isoquinoline ligand to complete the distorted CuO(4)N square-pyramidal geometry. The Cu cation is displaced by 0.2092 (8) Å from the basal plane formed by the four O ato...

The title compound, C(29)H(20)ClNOS, is a 1-substituted-3-phenyl-isoquinoline that crystallizes with four independent mol-ecules in the asymmtric unit. The four mol-ecules have similar C-S-C angles. The most noteworthy differences between the mol-ecules relate to the inclination of the 3-phenyl subsituent with respect to the isoquinoline fused-ring [dihedral angles of 21.2 (1), 25.6 (2), 34.3 (...

The inhibitory activity of Coptis chinensis rhizome-derived material was evaluated against sortase, a bacterial surface protein anchoring transpeptidase, from Staphylococcus aureus ATCC 6538p and compared to that of four commercially available isoquinoline alkaloids. The biologically active constituent of C. chinensis extract was characterized as the isoquinoline alkaloid, berberine chloride, b...

An efficient metal-free oxidative arylsulfonylation of α,β-unsaturated imides with sulfonylhydrazides leading to isoquinoline-1,3(2H,4H)-dione derivatives has been developed. The procedure involves the generation of sulfonyl radicals via cleavage of the S-N bond of sulfonylhydrazides with sulfonylation and C-H functionalization. The protocol uses the economical and environmentally friendly TBAI...

The title complex, [Ag(2)(C(25)H(22)P(2))(2)(C(9)H(7)N)(2)](CF(3)SO(3))(2)·C(9)H(7)N, was prepared by the reaction of silver(I) trifluoro-methane-sulfonate with isoquinoline and bis-(diphenyl-phosphan-yl)methane (dppm). The dinuclear mol-ecule is located about a center of inversion and the Ag(I) atom is coordinated by two dppm P atoms and one isoquinoline N atom, forming an eight-membered metal...

The one-pot four component synthesis of 3-(Imino)-2,3-dihydropyrrolo[2,1-a]isoquinoline-1,1(10bH)-dicarbonitrile derivatives via a catalyst-free reaction between aryl aldehydes, malononitrile, isoquinoline and isocyanides was successfully conducted in glycerol as a benign, nontoxic and biodegradable promoting reaction medium. The progress of the reaction with two different common purification m...

Natural product discovery efforts have focused primarily on microbial biosynthetic gene clusters (BGCs) containing large multimodular polyketide synthases and nonribosomal peptide synthetases; however, sequencing of fungal genomes has revealed a vast number of BGCs containing smaller NRPS-like genes of unknown biosynthetic function. Using comparative metabolomics, we show that a BGC in the huma...

The mol-ecular structure of the title compound at 123 K, C(12)H(9)F(3)N(2)O, presents a rotationally disordered CF(3) group. Hydrogen bonds between the amide NH group and the N atom of the isoquinoline form a chain in the b-axis direction. The packed structure forms alternate layers of isoquinoline and amide groups parallel to the ab plane.

This review covers beta-phenylethylamines and isoquinoline alkaloids derived from them, including further products of oxidation. condensation with formaldehyde and rearrangement, some of which do not contain an isoquinoline system, together with naphthylisoquinoline alkaloids, which have a different biogenetic origin. The occurrence of the alkaloids, with the structures of new bases, together w...