A series of novel podocarpa-8,11,13-triene-7- and 13-nitriles were prepared from the naturally occurring labdane diterpenoid (+)-manool, using podocarp-8(14)-en-13-one and 13-methoxypodocarpa-8,11,13-trien-7-one as key intermediates and TMSCN and acetonitrile as source of the nitrile. The synthesised compounds were screened for cytotoxicity against mouse macrophage cell line (RAW 264.7), human colon adenocarcinoma cell lines (HT-29) and human prostate adenocarcinoma cell lines (PC3) and for anti-inflammatory, as measured by the inhibition of nitric oxide (NO) production by RAW cells. 7-Oxopodocarpa-8,11,13-triene-13-nitrile exhibited significant inhibition of NO production (IC50 = 6 μM) and was not cytotoxic.
以荚果-8(14)-烯-13-酮和 13-甲氧基荚果-8,11,13-三烯-7-酮为关键中间体,以 TMSCN 和乙腈为腈源,从天然存在的唇烷类二萜 (+)-manool 中制备了一系列新型荚果-8,11,13-三烯-7-和 13-腈。对合成的化合物进行了筛选,以检测其对小鼠巨噬细胞系(RAW 264.7)、人结肠腺癌细胞系(HT-29)和人前列腺癌细胞系(PC3)的细胞毒性,并通过抑制 RAW 细胞产生一氧化氮(NO)来检测其抗炎性。7-Oxopodocarpa-8,11,13-triene-13-nitrile 能显著抑制一氧化氮的产生(IC50 = 6 μM),且无细胞毒性。