Design, synthesis and in vitro and in vivo antitumor activities of novel bivalent β-carbolines
摘要:
A series of bivalent beta-carbolines with a spacer of three to ten methylene units between the indole nitrogen was synthesized and evaluated as antitumor agents. The results demonstrated that compounds 18c, 21b, 25a and 31b exhibited strong cytotoxic activities with IC50 value of lower than 20 mu M against four tumor cell lines. Acute toxicities and antitumor efficacies of the selected compounds in mice were also evaluated, compounds 18b, 21b, 26a and 31b exhibited potent antitumor activities with tumor inhibition rate of over 40% in animal models. Preliminary structure-activity relationships analysis indicated that (1) the spacer length affected antitumor potencies, and four to six methylene units were more favorable; (2) the introduction of appropriate substituent into position-1 of beta-carboline facilitated antitumor potencies. (C) 2012 Elsevier Masson SAS. All rights reserved.
This invention discloses bis β-carboline compounds, their manufacturing method, pharmaceutical compositions, and applications. Specifically, the bis β-carboline compounds and their pharmaceutically acceptable salts are represented by general formula I, and are produced by condensation of β-carboline intermediates and dihaloalkanes. Furthermore, the invention discloses pharmaceutical compositions containing the bis β-carboline compounds represented by formula I in effective dosages and pharmaceutically acceptable carriers, as well as applications in the manufacturing of antitumor agents using these bis β-carboline compounds. Such tumors include melanoma, gastric cancer, lung cancer, breast cancer, kidney cancer, liver cancer, oral squamous cell carcinoma, cervical cancer, ovarian cancer, pancreatic cancer, prostate cancer, and colon cancer.【Chemical formula 1】
PhI(OAc)<sub>2</sub>-mediated one-pot oxidative decarboxylation and aromatization of tetrahydro-β-carbolines: synthesis of norharmane, harmane, eudistomin U and eudistomin I
A new strategy for synthesis of β-carbolines via one-pot oxidative decarboxylation at room temperature is developed for the first time.
首次开发了一种在室温下通过一锅法氧化脱羧合成β-咔啉的新策略。
An efficient one-pot decarboxylative aromatization of tetrahydro-β-carbolines by using N-chlorosuccinimide: total synthesis of norharmane, harmane and eudistomins
作者:Ahmed Kamal、Manda Sathish、A. V. G. Prasanthi、Jadala Chetna、Yellaiah Tangella、Vunnam Srinivasulu、Nagula Shankaraiah、Abdullah Alarifi
DOI:10.1039/c5ra16221a
日期:——
A mild one-pot synthesis of β-carbolines from their tetrahydro-β-carboline acids has been developed via decorboxylative aromatization using N-chlorosuccinimide (NCS).