New norditerpenoid alkaloids from Scutellaria barbata with cytotoxic activities.

نویسندگان

  • Sheng-Jun Dai
  • Wei-Bing Peng
  • Li Shen
  • De-Wu Zhang
  • Yan Ren
چکیده

Two new norditerpenoid alkaloids, named scutebarbatines M-N (1 and 2), were isolated from the whole plant of Scutellaria barbata D. Don. Their structures were established on the basis of detailed spectral analyses. In vitro, two new compounds showed significant cytotoxic activities against three human cancer lines (HONE-1 nasopharyngeal, KB oral epidermoid carcinoma and HT29 colorectal carcinoma cells), and gave IC₅₀ values in the range of 3.5-6.3 µM.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

New neo-clerodane diterpenoid alkaloids from Scutellaria barbata with cytotoxic activities.

Four new neo-clerodane diterpenoid alkaloids, named scutebarbatines I-L (1-4), were isolated from the whole plant of Scutellaria barbata D. DON. Their structures were established on the basis of detailed spectral analyses. In vitro, the four new compounds showed significant cytotoxic activities against three human cancer lines (HONE-1 nasopharyngeal, KB oral epidermoid carcinoma, and HT29 color...

متن کامل

Optimization of ultrasonic extraction of alkaloids from Scutellaria barbata D. Don using response surface methodology

Based on a BoxBehnken design,response surface methodology was used to optimize the effects of processing parameters of extraction from Scutellaria barbata on total alkaloids yield. Three independent variables such as extraction time (X1), liquid-solid ratio (X2) and ultrasonic frequency (X3) were study. The P-value indicated that both extraction time (X1) and ultrasonic frequency (X3) had signi...

متن کامل

Chem. Pharm. Bull. 55(8) 1218—1221 (2007)

lation of five neo-clerodane diterpenoid alkaloids from the aerial parts of Scutellaria barbata. As part of our continuing work to discover more novel neo-clerodane diterpenoids, we have re-investigated the aerial parts of this species and isolated the previously isolated scutebarbatine B (6), scutebarbatine D (7) and scutebarbatine F (8), together with five new neo-clerodane diterpenoid alkalo...

متن کامل

In vitro and in vivo antitumor activity of scutebarbatine A on human lung carcinoma A549 cell lines.

During our systematic study on the anticancer activities of Scutellaria barbata, scutebarbatine A (SBT-A), one of the major alkaloids in S. barbata, was found to have antitumor effects on A549 cells. Thus, we designed the present study to investigate in detail the antitumor effects of SBT-A. The cytotoxic effect of SBT-A on A549 in vitro were determined by an MTT assay and evaluated by IC50 val...

متن کامل

Two new phenols from Scutellaria barbata.

Two new phenols, 2(S)-2',7-dihydroxy-5,8-dimethoxyflavanone and (S)-2-(4-hydroxyphenyl)-6-methyl-2,3-dihydro-4H-pyran-4-one, were isolated from the ethanol extract of Scutellaria barbata. Their structures were elucidated on the basis of spectroscopic analysis.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Natural product research

دوره 25 11  شماره 

صفحات  -

تاریخ انتشار 2011