Total Synthesis of 7-Hydroxymurrayazolinine, Murrayamine D, and Mahanine via <i>m</i>-Nitro Group Activated Pyran Annulation
作者:Shujie Hou、Yong Liu、Yali Kong、Milton L. Brown
DOI:10.1021/acs.orglett.5b00422
日期:2015.5.15
The facile totalsynthesis of the natural product (±)-mahanine was obtained in eight steps with an overall 52% yield from readily accessible known nitrophenol derivative 6. After a one-step, acid-catalyzed annulation, two additional natural products were formed including 7-hydroxymurrayazolinine, representing its first reported totalsynthesis. In the whole process, the introduction of the m-nitro
NEW SYNERGISTIC PHYTOCHEMICAL COMPOSITION FOR THE TREATMENT OF OBESITY
申请人:GOKARAJU Ganga Raju
公开号:US20100227828A1
公开(公告)日:2010-09-09
Synergistic anti-adipogenic and pro-lipolytic compositions for the prevention and amelioration of adipogenesis and lipolysis mediated diseases, comprising at least two extracts selected from enriched demethylated curcuminoids obtained from
Curcuma longa, Moringa oleifera
and
Murraya koenigii
. The anti-adipogenic and pro-lipolytic compositions optionally contain one or more anti-obesic agents. These compositions are useful for preventing anti-inflammatory and free radical mediated diseases.
PROCESS FOR THE ISOLATION OF ORGANIC COMPOUNDS USEFUL FOR THE TREATMENT OF CANCER
申请人:Mandal Chitra
公开号:US20130065932A1
公开(公告)日:2013-03-14
The present invention relates to two main components, mahanine and mahanimbine (dehydroxy-mahanine) from
Murraya koenigii
for the treatment of glioblastoma and cervical carcinoma. Mahanimbine exhibited anti-cancer activity against lymphoid leukemia, myeloid leukemia, glioma, cervical carcinoma, pancreatic, colon and lung cancers in nineteen cells of different genetic status. C-3 hydroxy and NH groups are responsible contributing groups for their cytotoxicity. Mahanine reduced the doses of cisplatin and paclitaxel in cervical cancer showing better efficacy and useful as an adjunct chemotherapeutic agent to reduce toxicity these two drugs. A new cheap process for this preparation was established. EtOAc extract containing alkaloids enriched with mahanimbine and mahanine, is active against glioma and cervical cancers. Mahanine is targeting the chaperone Hsp90 which led to the proteasome-dependent degradation of several Hsp90-client proteins in diverse carcinoma types, glioblastoma, cervical carcinoma and pancreatic adenocarcinoma irrespective of their tissue origins thereby killing the cancer cells.
Disclosed herein are methods of synthesizing mahanine and related compounds. The synthesis features an intramolecular aryl-alkyne isomerization, transition metal catalyzed cross-coupling and intramolecular carbazole forming reaction.
作者:Christian Schuster、Konstanze K. Julich-Gruner、Heinrich Schnitzler、Ronny Hesse、Anne Jäger、Arndt W. Schmidt、Hans-Joachim Knölker
DOI:10.1021/acs.joc.5b00630
日期:2015.6.5
We describe efficient synthetic routes to murrayamine A (mukoenine C), O-methylmurrayamine A, mahanine, O-methylmahanine, and murrayamine D and the first total syntheses of murrayamine E, I, and R.. Key steps are a palladium-catalyzed construction of the carbazole framework and an: annulation of the pyran ring, which is either catalyzed by phenylboronic acid or promoted by a Lewis acid.