Jw. Zhu et al., SYNTHESIS AND ACTIVITY OF BREFELDIN-A ANALOGS AS INDUCERS OF CANCER CELL-DIFFERENTIATION AND APOPTOSIS, Bioorganic & medicinal chemistry letters, 7(2), 1997, pp. 139-144
We designed and synthesized several brefeldin A (BFA) analogs. These c
ompounds were evaluated for the ability to induce differentiation and
apoptosis in human colonic carcinoma cell line HCT116. Diacetyl BFA (2
a), 4-acetyl BFA (2b), 7-acetyl BFA (2c), and 10,11-epoxy BFA (3b) wer
e active but tetrahydro BFA (3a) and other analogs could not induce th
e malignant cells to differentiate. The results suggested that the moi
ety from 1- to 4-position in BFA as well as its conformational rigidit
y is essential for its biological activity. (C) 1997, Elsevier Science
Ltd.