Synthesis and bioevaluation of N-(arylalkyl)-homospermidine conjugates
摘要:
N'-(Arylalkyl)homospermidines (Ic-1f) and terminally piperazine-substituted homospermidine conjugates (2a-2e) were synthesized and evaluated for cytotoxicity in mouse leukemia L 1210, alpha-difluorometliylornithine (DFMO)-treated L 12 10, melanoma B 16, spermidine (SPD)-treated B 16, and HeLa cell lines. Results demonstrated that homospermidine was a more effective vector than piperazine-substituted homospermidine in ferrying diverse arenes into cells via the polyamine transporter. The leading compound, 9-anthracenemethyl-homospermidine (1a), was shown to induce apoptosis in B16 cells and IL-3 dependent FL5.12A proB cells. The novel conjugate 4-biphenylmethyl-homospermidine (1e) could also induce apoptosis. However, it exhibited different effect on the cell cycle of B16 cells compared to la. (c) 2007 Elsevier Ltd. All rights reserved.
Synthesis and bioevaluation of N-(arylalkyl)-homospermidine conjugates
摘要:
N'-(Arylalkyl)homospermidines (Ic-1f) and terminally piperazine-substituted homospermidine conjugates (2a-2e) were synthesized and evaluated for cytotoxicity in mouse leukemia L 1210, alpha-difluorometliylornithine (DFMO)-treated L 12 10, melanoma B 16, spermidine (SPD)-treated B 16, and HeLa cell lines. Results demonstrated that homospermidine was a more effective vector than piperazine-substituted homospermidine in ferrying diverse arenes into cells via the polyamine transporter. The leading compound, 9-anthracenemethyl-homospermidine (1a), was shown to induce apoptosis in B16 cells and IL-3 dependent FL5.12A proB cells. The novel conjugate 4-biphenylmethyl-homospermidine (1e) could also induce apoptosis. However, it exhibited different effect on the cell cycle of B16 cells compared to la. (c) 2007 Elsevier Ltd. All rights reserved.
Dihydromotuporamine C (4) and its 4,4-triamine analogue (5) were synthesized in good yield using ring-closing metathesis (RCM) methods. Comparison of their biological activities (Ki determinations in L1210 cells and IC50 determinations in L1210, CHO, and CHO-MG cells) revealed that the motuporamine derivatives do not use the polyaminetransporter (PAT) for cellular entry. Bioevaluation of a N1-(an