Antineoplastic agents. 551. Isolation and structures of bauhiniastatins 1-4 from Bauhinia purpurea.

Abstract

Bioassay-guided (P388 lymphocytic leukemia cell line) separation of extracts prepared from the leaves, stems, and pods of Bauhinia purpurea, and, in parallel, its roots, led to the isolation of four new dibenz[b,f]oxepins (2a, 3-5) named bauhiniastatins 1-4, as well as the known and related pacharin (1) as cancer cell growth inhibitors. The occurrence of oxepin derivatives in nature is quite rare. Bauhiniastatins 1-4 were found to exhibit significant growth inhibition against a minipanel of human cancer cell lines, and bauhiniastatin 1 (2a) was also found to inhibit the P388 cancer cell line. Structures for these new cancer cell growth inhibitors were established by spectroscopic techniques that included HRMS and 2D NMR.

• Authors: George R Pettit, Atsushi Numata, Chika Iwamoto, Yoshihide Usami, Takeshi Yamada, Hirofumi Ohishi, Gordon M Cragg
• Journal: Journal of natural products (J Nat Prod) Vol. 69 Issue 3 Pg. 323-7 (Mar 2006) ISSN: 0163-3864 [Print] United States
• PMID: 16562827 (Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't)

Chemical References

• Antineoplastic Agents, Phytogenic
• Benzoxepins

Topics

• Animals
• Antineoplastic Agents, Phytogenic (chemistry, isolation & purification, pharmacology)
• Bauhinia (chemistry)
• Benzoxepins (chemistry, isolation & purification, pharmacology)
• Drug Screening Assays, Antitumor
• Humans
• India
• Leukemia P388
• Mice
• Molecular Structure
• Plant Roots (chemistry)
• Plants, Medicinal (chemistry)
• Tumor Cells, Cultured