77497-95-1Relevant articles and documents
Efficient synthesis and structural analysis of new dioxopiperazine isoquinolines
Cabedo, Nuria,El Aouad, Noureddine,Berenguer, Inmaculada,Zamora, Miguel,de Arellano, M. Carmen Ramírez,Suvire, Fernando,Bermejo, Almudena,Enriz, Daniel,Cortes, Diego
, p. 4408 - 4418 (2006)
We report herein the synthesis of new dioxopiperazine isoquinolines using the Pictet-Spengler cyclisation. Our synthetic strategy for the preparation of two new compounds (5, 6), with a tetrahydro-6H-pyrazino[1,2-b]isoquinoline-1,4-dione moiety was developed in only four steps. To understand better the crucial step of the synthesis reported here, theoretical calculations using semiempirical (PM3), ab initio and DFT computations were carried out on a reduced system model. The structure of chlorohydrate water solvate of tetrahydro (2-piperidinylethyl)-6H-pyrazino [1,2-b]isoquinoline-1,4-dione (6·HCl·2H2O) was determined by X-ray diffraction. Theoretical calculations (RHF/3-21G and RB3LYP/6-31G(d)) were also performed for compound 6 neutralised with a chloride ion.
New approaches towards the synthesis of 1,2,3,4-tetrahydro isoquinoline-3-phosphonic acid (TicP)
Viveros-Ceballos, José Luis,Matías-Valdez, Lizeth A.,Sayago, Francisco J.,Cativiela, Carlos,Ordó?ez, Mario
, p. 451 - 459 (2021/03/06)
Two new strategies for the efficient synthesis of racemic 1,2,3,4-tetrahydroisoquinoline-3-phosphonic acid (TicP) (±)-2 have been developed. The first strategy involves the electron-transfer reduction of the easily obtained α,β-dehydro phosphonophenylalanine followed by a Pictet–Spengler cyclization. The second strategy involves a radical decarboxylation–phosphorylation reaction on 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (Tic). In both strategies, the highly electrophilic N-acyliminium ion is formed as a key intermediate, and the target compound is obtained in good yield using mild reaction conditions and readily available starting materials, complementing existing methodologies and contributing to the easy accessibility of (±)-2 for further research.
Discovery of Tetrahydroisoquinoline-Containing CXCR4 Antagonists with Improved in Vitro ADMET Properties
Miller, Eric J.,Jecs, Edgars,Truax, Valarie M.,Katzman, Brooke M.,Tahirovic, Yesim A.,Wilson, Robert J.,Kuo, Katie M.,Kim, Michelle B.,Nguyen, Huy H.,Saindane, Manohar T.,Zhao, Huanyu,Wang, Tao,Sum, Chi S.,Cvijic, Mary E.,Schroeder, Gretchen M.,Wilson, Lawrence J.,Liotta, Dennis C.
supporting information, p. 946 - 979 (2018/02/17)
CXCR4 is a seven-transmembrane receptor expressed by hematopoietic stem cells and progeny, as well as by ≥48 different cancers types. CXCL12, the only chemokine ligand of CXCR4, is secreted within the tumor microenvironment, providing sanctuary for CXCR4+ tumor cells from immune surveillance and chemotherapeutic elimination by (1) stimulating prosurvival signaling and (2) recruiting CXCR4+ immunosuppressive leukocytes. Additionally, distant CXCL12-rich niches attract and support CXCR4+ metastatic growths. Accordingly, CXCR4 antagonists can potentially obstruct CXCR4-mediated prosurvival signaling, recondition the CXCR4+ leukocyte infiltrate from immunosuppressive to immunoreactive, and inhibit CXCR4+ cancer cell metastasis. Current small molecule CXCR4 antagonists suffer from poor oral bioavailability and off-target liabilities. Herein, we report a series of novel tetrahydroisoquinoline-containing CXCR4 antagonists designed to improve intestinal absorption and off-target profiles. Structure-activity relationships regarding CXCR4 potency, intestinal permeability, metabolic stability, and cytochrome P450 inhibition are presented.
Design, synthesis and biological evaluation of novel 1,2,3,4- tetrahydroisoquinoline-3-carboxylic acid derivatives as aminopeptidase N/CD13 inhibitors
Zhang, Xiaopan,Zhang, Jian,Zhang, Lei,Feng, Jinghong,Xu, Yingying,Yuan, Yumei,Fang, Hao,Xu, Wenfang
scheme or table, p. 6015 - 6025 (2011/11/05)
A series of novel 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid derivatives were designed, synthesized and assayed for their activities against aminopeptidase N (APN/CD13) and MMP-2. The results showed that most compounds exhibited higher inhibitory activities against APN than that of MMP-2. Within this series, compound 12h (IC50 = 6.28 ± 0.11 μM) showed similar inhibitory activities compared with Bestatin (IC50 = 5.55 ± 0.01 μM), and it could be used as novel lead compound for the future APN inhibitors development as anticancer agents.
Total syntheses of conformationally constrained didemnin B analogues. Replacements of N2O-dimethyltyrosine with L-1,2,3,4-tetrahydroisoquinoline and L-1,2,3,4-tetrahydro-7-methoxyisoquinoline
Tarver Jr.,Pfizenmayer,Joullie
, p. 7575 - 7587 (2007/10/03)
The design and synthesis of two conformationally constrained analogues of didemnin B are described. The [N,O-Me2Tyr5]residue of didemnin B was replaced with L-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (Tic) and L-1,2,3,4-tetrahydro-7-methoxyisoquinoline-3-carboxylic acid (MeO-Tic), which mimic the N,O-dimethylated tyrosine while constraining the conformation of the molecule. Preliminary results indicate that the conformation of the [N,O-Me2Tyr5]residue closely matches the conformation imposed by the Tic replacement.
Synthesis and biological activities of a novel class of azole-containing antifungal agents
Liu, Lee Tai,Lin, Ya-Chuan,Wang, Chia-Lin J.,Lin, Mei-Shey,Yen, Su-Chen,Chen, Hsiao-Jen
, p. 1335 - 1338 (2007/10/03)
A series of novel 1,2,3,4-tetrahydroisoquinoline derived azoles has been designed and synthesized as antifungal agents which might function as inhibitors of cytochrome P-450 dependent lanosterol 14α-demethylase. In vitro tests showed that some of these compounds, especially 5b and 6b, effectively inhibit the growth of several strains of yeasts as well as molds.
