番荔枝化学成分研究(6)

自番荔枝（ ＡｎｎｏｎａｓｑｕａｍｏｓａＬ．） 种子中得到化合物１ 和２ , 化合物２ 是已知的ｂｕｌｌａｔａｃｉｎｏｎｅ （２ , ４－ 顺式和反式－ ｂｕｌｌａｔａｃｉｎｏｎｅ 的混晶） , １ 是新化合物, 命名为番荔枝塔亭丁（ｓｑｕａｍｏｓｔａｔｉｎ Ｄ） , 其结构经ＩＲ、ＭＳ、１Ｈ－ ＮＭＲ和１３ＣＮＭＲ谱解析推定如（１） 式。     

番荔枝化学成分研究(5)

自番荔枝(AnnonasquamosaL)种子中分离到3个番荔枝内酯(1～3)。化合物1和2分别是已知化合物bullatacin和annoninⅠ,化合物3系新的间双四氢呋喃环型番荔枝内酯,命名为番荔枝塔亭丙(squamostatinC),经IR、MS、1HNMR及13CNMR谱分析,其结构推定如(3)式。     

滇产圆滑番荔枝中的番荔枝内酯

从滇南产的圆滑番荔枝的种子中得到４个番荔枝内酯,４－ｄｅｘｏｘｙｃｈｅｒｉｍｏｌｉｎ－２（１）,ｃｈｅｒｉｍｏｌｉｎ－２（２）,ａｎｎｏｎｉｎＩ（３）和ｄｅｓａｃｅｔｙｌｕｖａｒｉｃｉｎ（４）。其中１为新化合物。     

刺果番荔枝中的番荔枝内酯（2）

从刺果番荔枝的种子中分离了３个具有酮基的单四氢呋喃环型的番荔枝内酯Ｓ７,Ｓ８和Ｓ１０,根据它们的［ａ］Ｄ,＾１ＨＮＭＲ,＾１３ＣＮＭＲ,ＭＳ及ＩＲ谱分析,分别推定为新－异阿诺纳辛－１０－酮（Ｓ７）、新阿诺纳辛－１０－酮（Ｓ８）和异－新阿诺纳辛－１０－酮（Ｓ１０）。     

刺果番荔枝中的番荔枝内酯（3）

刺果番荔枝中的番荔枝内酯（３）杨仁洲,吴淑君（中国科学院华南植物研究所,广州５１０６５０）关键词刺果番荔枝,番荔枝内酯ＡＮＮＯＮＡＣＥＯＵＳＡＣＥＴＯＧＥＮＩＮＳＦＲＯＭＡＮＮＯＮＡＭＵＲＩＣＡＴＡ（Ⅲ）￥ＹＡＮＧＲｅｎ－Ｚｈｏｕ;ＷＵＳｈｕ－Ｊｕｎ...     

景洪哥纳香茎中的番荔枝内酯

从景洪哥那香茎中得到３个具有抗癌活性和杀虫作用的番荔枝内醌化合物,ｇｏｎｉｏｔｈａｌａｍｉｃｉｎ（１）ｃｈｅｌｉｅｎｓｉｓｉｎＢ（２）〈ＣｈｅｌｉｅｎｓｉｓｉｎＣ（３）,其中２,３为新化合物。     

番荔枝西宁甲—一个新的邻叁四氢呋喃环型番荔枝内酯

从番荔枝（Ａｎｎｏｎａ ｓｑｕａｍ ｏｓａ Ｌ．）的种子中分离鉴定了一个番荔枝内酯的新类型——邻叁四氢呋喃环型的Ｃ３６的化合物,命名为番荔枝西宁甲。     

刺果番荔枝中的番荔枝内酯

从刺果番荔枝（Ａｎｎｏｎａ ｍ ｕｒｉｃａｔａ Ｌ．）的种子中分离到３ 个单四氢呋喃型番荔枝内酯类化合物,用波谱方法鉴定为海南哥纳香甲素（ｈｏｗ ｉｉｃｉｎ Ａ, Ｓ１３）、乙素（ｈｏｗ ｉｉｃｉｎ Ｂ, Ｓ５）和新化合物４－去氧海南哥纳香乙素（４－ｄｅｓｏｘｙｈｏｗ ｉｉｃｉｎ Ｂ, Ｓ２）。     

牛心番荔枝种子化学成分的研究

从牛心番荔枝Annona reticulata L.种子的乙醇提取物分得13个化合物,根据光谱数据分析鉴定其中8个为番荔素:Annonareticin(1),2,4-cis-Isoannonareticin((2-1)),2,4-trans-Isoannonareticin(2-2),Solamin(3),Murisolin(4),Annoreticuin(5),Annomonicin(6)和Reticulatinone(7);以及β-谷甾醇(8),胡萝卜甙(9),蔗糖(10),棕榈酸(11)和硬脂酸(12)等。其中化合物2-1是新的番荔素。     

番荔枝种子中的3个新的番荔枝内酯

从番荔枝（Ａｎｎｏｎａ ｓｑｕａｍ ｏｓａ Ｌ．）的种子中分离到Ａ１—Ａ７共７个化合物,其中Ａ２、Ａ３和Ａ５为新的番荔枝内酯,分别命名为新－去乙酰紫玉盘素（ｎｅｏ－ｄｅｓａｃｅｔｙｌｕｖａｒｉｃｉｎ, Ａ２）、新阿诺宁乙（ｎｅｏ－ａｎｎｏｎｉｎ Ｂ, Ａ３）和新牛心番荔枝素甲（ｎｅｏ－ｒｅｔｉｃｕｌａｔａｃｉｎ Ａ, Ａ５）。     

Studies on the Chemical Constituents of Annona squamosa(5)

From the seeds of Annona squamosa L.,three compounds were obtained,in which compounds i and 2 are known compounds,i.e. bullatacin and annonin I,respectively.Compounds 3 is a new non -adjacent bis -tetrahydrofuranyl annonaceous acetogenin,named squamostatin C.Based on the analysis of IR MS,1H NMR and 13 C NMR spectra,the structure of compound 3 was elucidated as (3).     

Three Novel Chemical Compounds of Annonaceous Acetogenins from the Seeds of Annona squamosa

Seven compounds (A1--A7) were isolated from the seeds of Annona squamosa L. Three of them, A2, A3, and A5, are new compounds of annonaeeous aeetogenins, and they were name neo-desacetyluvaricin (A2), neo-annonin B (A3) and neo-reticulatacin A (A5), respectively.     

Three cytotoxic Annonaceous acetogenins from the seeds of Annona squamosa

Three new Annonaceous acetogenins, squamocin-IV (1), squamocin-V (2) and squamoxinone-E (3), together with seven other known Annonaceous acetogenins (4–10) were isolated from the seeds of Annona squamosa. The structures of all of the isolates were established and characterized through spectral and chemical methods. The new Annonaceous acetogenins 1–3 were evaluated for their cytotoxicity against the Hep-G2, SMMC-7721, BEL-7402, BGC-803 and H460 human cancer cell lines. Compound 3 exhibited the best cytotoxic activity, with IC₅₀ values of 0.103, 0.687, 4.19, 0.43 and 6.56 μg/mL, respectively for the cell lines above; meanwhile, Compound 1 showed selective cytotoxic activity against H460, with an IC₅₀ value of 0.049 μg/mL. The first mono-ACG (2) composed of 38 carbons was discovered.     

Lipoxygenase inhibition by novel fatty acid ester from Annona squamosa seeds

Studies on the seeds of Annona squamosa yielded a novel lipoxygenase inhibitor fatty acid ester, (+) - annonlipoxy (1). Compound 1 was screened for its enzyme inhibitory activity against lipoxygenase (E.C.1.14.18.1), exhibiting activity with IC₅₀ 69.05 ± 5.06 μm. Baicalein (IC₅₀ 22.6 ± 0.5 μm) was used as a positive control. Crude extracts of Annona squamosa fruit pulp and seeds were screened for its enzyme inhibitory activity against lipoxygenase and acetylcholinesterase. The crude ethanolic extract of fruit pulp and seeds of Annona squamosa also exhibited lipoxygenase activity with 22.2 and 26.7% inhibition, while the pet.ether extract of seeds of A. squamosa exhibited 52.7% inhibition at a concentration of 40 μg/200 ml. The crude ethanolic extract of seeds of Annona squamosa was also bioassayed for acetylcholinesterase inhibition and it was found inactive.     

壳聚糖涂膜对番荔枝冷藏期间某些生理生化指标的影响

经1％壳聚糖涂膜处理的番荔枝果实在冷藏（15℃）期间可溶性固形物（TSS）含量变化过程延缓,果实腐烂率显著降低,超氧化物歧化酶（SOD）和过氧化物酶（POD）活性提高,多酚氧化酶（PPO）活性和丙二醛（MDA）含量下降,过氧化氢酶（CAT）活性变化不明显。