A few from Pubmed:
The discovery and structure-activity relationships of indole-based inhibitors of glutamate carboxypeptidase II. Grella B, Adams J, Berry JF, Delahanty G, Ferraris DV, Majer P, Ni C, Shukla K, Shuler SA, Slusher BS, Stathis M, Tsukamoto T. Bioorg Med Chem Lett. 2010 Dec
15;20(24):7222-5. Epub 2010 Oct 26.
2.
Optimization of the indenone ring of indenoisoquinoline topoisomerase I inhibitors. Morrell A, Placzek M, Parmley S, Grella B, Antony S, Pommier Y, Cushman M. J Med Chem. 2007 Sep 6;50(18):4388-404. Epub 2007 Aug 4.
Investigation of the affinities of two new beta-carbolines for rat brain imidazoline(2) receptors. Tyacke RJ, Lau A, Grella B, Glennon RA, Nutt DJ, Hudson AL. Ann N Y Acad Sci. 2003 Dec;1009:361-3.
Binding of beta-carbolines at imidazoline I2 receptors: a structure-affinity investigation. Glennon RA, Grella B, Tyacke RJ, Lau A, Westaway J, Hudson AL. Bioorg Med Chem Lett. 2004 Feb 23;14(4):999-1002.
Binding of an imidazopyridoindole at imidazoline I2 receptors. Glennon RA, Grella B, Tyacke RJ, Lau A, Westaway J, Hudson AL. Bioorg Med Chem Lett. 2004 Jan 19;14(2):527-9.
Binding of beta-carbolines at 5-HT(2) serotonin receptors.Grella B, Teitler M, Smith C, Herrick-Davis K, Glennon RA.Bioorg Med Chem Lett.
2003 Dec 15;13(24):4421-5.
7.
Binding of tetrahydrocarboline derivatives at human 5-HT5A receptors.Khorana N, Smith C, Herrick-Davis K, Purohit A, Teitler M, Grella B, Dukat M, Glennon RA.J Med Chem. 2003 Aug 28;46(18):3930-7.
Synthesis and biological evaluation of thiol-based inhibitors of glutamate carboxypeptidase II: discovery of an orally active GCP II inhibitor.Majer P, Jackson PF, Delahanty G, Grella BS, Ko YS, Li W, Liu Q, Maclin KM, Poláková J, Shaffer KA, Stoermer D, Vitharana D, Wang EY, Zakrzewski A, Rojas C, Slusher BS, Wozniak KM, Burak E, Limsakun T, Tsukamoto T.J Med Chem. 2003 May 8;46(10):1989-96.
Binding of beta-carbolines and related agents at serotonin (5-HT(2) and
5-HT(1A)), dopamine (D(2)) and benzodiazepine receptors.Glennon RA, Dukat M, Grella B, Hong S, Costantino L, Teitler M, Smith C, Egan C, Davis K, Mattson MV.Drug Alcohol Depend. 2000 Aug 1;60(2):121-32.
10.
Investigation of hallucinogenic and related beta-carbolines.Grella B, Dukat M, Young R, Teitler M, Herrick-Davis K, Gauthier CB, Glennon RA. Drug Alcohol Depend. 1998 Apr 1;50(2):99-107.