Abstract Title:

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

Abstract Source:

J Nat Prod. 2006 Mar;69(3):323-7. PMID: 16562827

Abstract Author(s):

George R Pettit, Atsushi Numata, Chika Iwamoto, Yoshihide Usami, Takeshi Yamada, Hirofumi Ohishi, Gordon M Cragg

Article Affiliation:

Cancer Research Institute and Department of Chemistry and Biochemistry, Arizona State University, Tempe, 85287-2404, USA. bpettit@asu.edu


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.

Study Type : In Vitro Study

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