Total synthesis and cytotoxicity of bisebromoamide and its analogues
摘要:
A highly convergent route for assembling bisebromoamide, its stereoisomers and a simplified analogue has been accomplished, which features connecting its left part and right part via thiazoline ring formation at the final stage. Preliminary biological studies revealed that compounds with both proposed and revised structures, and a simplified analogue have similar potency against the proliferation of HeLa S-3 cell, indicating that the stereochemistry of methylthiazoline part, and methyl group at the 4-methylproline residue in bisebromoamide, have limited influence on its cytotoxicity. (C) 2010 Elsevier Ltd. All rights reserved.
Kurahyne B (2), a new analogue of kurahyne (1), was isolated from the marine cyanobacterium Okeania sp. Its gross structure was elucidated based on spectroscopic analyses, and the absolute configuration was established by totalsynthesis. Kurahyne B (2) inhibited the growth of both HeLa and HL60 cells, with IC50 values of 8.1 and 9.0 μM, respectively. The growth-inhibitory activity of kurahyne B was the
The total synthesis of acetylene-containing lipopeptides odookeanynes A (1) and B (2), isolated from the marine cyanobacterium Okeania sp., has been achieved. A biological evaluation using synthetic odookeanynes revealed their potent antitrypanosomal activity. This report not only describes a synthetic pathway for structurally related compounds for SAR studies but also offers new insights into their
已实现从海洋蓝藻Okeania sp.中分离出的含乙炔脂肽odookeanynes A ( 1 ) 和B ( 2 ) 的全合成。使用合成的阿杜烷炔进行的生物学评估揭示了它们有效的抗锥虫活性。该报告不仅描述了用于 SAR 研究的结构相关化合物的合成途径,而且还提供了对其作为抗寄生虫药物的潜力的新见解。