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Synthesis and Crystal Structure of 6-(3'-Indolyl)-8-(p-chlorophenyl)-10,10dimethyl-10H-pyrido [1,2-a] Indolium Perchlorate
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作者 姜林 汪建民 李长城 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2004年第12期1371-1375,共5页
The synthesis of the title compound ([C28H22ClN2]·ClO4) has been synthesized and its structure was determined by X-ray diffraction. The compound belongs to the monoclinic system, space group P21/n with a = 15.113... The synthesis of the title compound ([C28H22ClN2]·ClO4) has been synthesized and its structure was determined by X-ray diffraction. The compound belongs to the monoclinic system, space group P21/n with a = 15.113(5), b = 8.616(3), c = 19.556(7) ?, β = 92.562(7)°, Z = 4, V = 2544(2) ?3, Mr = 521.38, Dc = 1.361 g/cm3, F(000) = 1080, μ = 0.293 mm-1, the final R = 0.0580 and wR = 0.0788 (I > 2σ(I)). The structure was solved by direct methods and refined by full-matrix least-squares techniques. X-ray analysis revealed that there exist four ring planes of 10H-indolium, pyridinium, p-chlorophenyl and indolyl in the molecule, of which the pyridinium ring forms a conjugated system with the p-chlorophenyl plane. According to the molecular structure of the title compound, it is presumed that the synthetic reaction may undergo the processes of C-addition, cyclization and aromatization. 展开更多
关键词 pyrido [1 2-a] indolium perchlorate crystal structure SYNTHESIS MECHANISM
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Studies on the Antitumour Activities of 8-Chloroadenosine
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作者 张礼和 方家椿 《Journal of Chinese Pharmaceutical Sciences》 CAS 1997年第1期4-10,共7页
Sp) Octyl 8 chloroadenosine 3′5′cyclophosphate (OCC), a newly synthesized 8 Cl c AMP derivative, strongly induced inhibition and differentiation in human leukemia HL 60 cells. In flow cytometry, OCC brought a... Sp) Octyl 8 chloroadenosine 3′5′cyclophosphate (OCC), a newly synthesized 8 Cl c AMP derivative, strongly induced inhibition and differentiation in human leukemia HL 60 cells. In flow cytometry, OCC brought about a block at the G1 phase of HL 60 cell cycle. OCC inhibited strongly the synthesis of DNA without affecting the synthesis of RNA and protein in HL 60 cells and also activated the c AMP dependent protein kinase in the cytosol of HL 60 cells. 8 Chloroadenosine is the active metabolite of OCC and inhibited significantly the growth of tumour in vitro and in vivo tests. 8 Chloroadenosine can induce differentiation of gastric mucoid adenocarcinoma cell line MGc80 3 and induce apoptosis in the MOLT 4 cells. The mechanism of the antitumour effects of 8 chloroadenosine was discussed. 展开更多
关键词 Sp) Octyl 8 chloroadenosine 3 5’ cyclophosphate (OCC) 8 Chloroadeno sine Antitumour activities
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8—氯腺苷抗肿瘤作用研究
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作者 张礼和 方春椿 《Journal of Chinese Pharmaceutical Sciences》 CAS 1997年第1期1-7,共7页
(Sp)-8-氯腺苷3',5'-环磷酸辛酯(OCC)是8-氯腺苷3',5'-环磷酸的新衍生物,对人白血病细胞HL-60有很强的抑制作用和诱导分化作用,用细胞流式光度术发现OCC阻断HL-60细胞周期于G1期,OCC对HL-60-细胞DNA合成有... (Sp)-8-氯腺苷3',5'-环磷酸辛酯(OCC)是8-氯腺苷3',5'-环磷酸的新衍生物,对人白血病细胞HL-60有很强的抑制作用和诱导分化作用,用细胞流式光度术发现OCC阻断HL-60细胞周期于G1期,OCC对HL-60-细胞DNA合成有显著抑制作用。但不影响RNA和蛋白质合成。OCC能激活HL-60细胞浆中蛋白激酶A,8-氯腺苷是OCC的活性代谢产物,能在体外和体内实验中明显抑制肿瘤的生长。8-氯腺苷也能诱导人胃癌MGc80-3细胞分化和人T淋巴母细胞MOTL-4的凋亡,本文讨论了8-氯腺苷抗肿瘤作用的机理。 展开更多
关键词 (Sp)-8-腺苷3' 5’-环磷酸辛酯 抗肿瘤作用 白血病细胞
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