新骨架重要活性天然分子的发现与功能研究
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1.重要萜类化合物的发现与生源启发的全合成
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<正>萜类化合物结构类型丰富,具有各类重要生物活性,作为临床药物应用的例子也很多。我们研究小组在长期研究中发现了大量的萜类化合物(包括萜类生物碱),其结构新颖多样、并普遍具有高度复杂的稠多环体系,部分化合物显示多种重要生物活性。近五年来,通过对60余种富含萜类的药用植物进行系统的化学成分研究,获得了500多个新化合物,特别是发现了多种新骨架类型和具有重要活性的天然化合物,包括抗疟疾、抗肿瘤、免疫抑制和抗艾滋病等活性等。对新骨架化合物的生源合成进行了探讨,并对其中的一些重要活性萜类衍生物进行了生源启发的全合成研究1-6。
...2.一个具有逆转肿瘤多药耐药活性的新骨架环脂肽化合物、其制备方法及用途
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3.一类乌药烷型二聚倍半萜类化合物、其制备方法及用途
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4.一类三萜化合物、其制备方法及用途
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5.一类乌药烷型二聚倍半萜类化合物在制备抗疟药物中的用途
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6.Cephalodiones A-D: Compound Characterization and Semisynthesis by [6+6] Cycloaddition
- 关键词:
- [6+6]-cycloaddition; C-19-norditerpenoid dimers; natural products;semisynthesis; Th17 cell differentiation;NATURAL-PRODUCTS; C-2 SYMMETRY; CEPHALOTAXUS; TROPONE; NORDITERPENOIDS;HARRINGTONOLIDE; DITERPENOIDS; SKELETON; DIMERS
- Ge, Zhan-Peng;Fan, Yao-Yue;Deng, Wen-De;Zheng, Cheng-Yu;Li, Ting;Yue, Jian-Min
- 《ANGEWANDTE CHEMIE-INTERNATIONAL EDITION》
- 2021年
- 60卷
- 17期
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Cephalodiones A-D (1-4), the first example of C-19-norditerpenoid dimers, were isolated and fully characterized from a Cephalotaxus plant. These new skeletal natural products shared a unique tricyclo[6.4.1.1(2,7)]tetradeca-3,5,9,11-tetraene-13,14-dione core that was capped in both ends with rigid multicyclic ring systems either C-2-symmetrically or asymmetrically. Compounds 1-4 were proposed to be biosynthetically produced by the [6+6]-cycloaddition of two identical C-19-norditerpenoid troponoids, which was validated by the semisyntheses of dimers 2-4. Moreover, some compounds showed significant inhibition on Th17 cell differentiation.
...7.Discovery of four modified classes of triterpenoids delineated a metabolic cascade: compound characterization and biomimetic synthesis
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- Cell culture;Chemical modification;Tumors;Synthetic aperture radar;Biomimetics;Biomimetic synthesis;Biosynthetic pathway;Chemical events;Cytotoxic activities;Diverse methods;Functional motifs;Structure-activity relationships;Tumor cell lines
- Zhou, Bin;Gao, Xin-Hua;Zhang, Min-Min;Zheng, Cheng-Yu;Liu, Hong-Chun;Yue, Jian-Min
- 《Chemical Science》
- 2021年
- 12卷
- 28期
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Chemical studies onDichapetalum gelonioideshave afforded 18 highly modified complex triterpenoids belonging to four compound classes as defined by the newly adapted functional motifs associated with the A ring of the molecules. Their structures were determined by solid data acquired by diverse methods. The biosynthetic pathway for the four compound classes was rationalizedviacascade modifications involving diverse chemical events. The subsequent biomimetic syntheses afforded all the desired products, including compounds16and19that were not obtained in our purification, which validated the proposed biosynthetic pathway. Besides, some compounds exhibited strong cytotoxic activities, especially2and4showed nanomolar potency against the NAMALWA tumor cell line, and a gross structure-activity relationship (SAR) of these compounds against the tested tumor cell lines was delineated.© The Royal Society of Chemistry 2021....8.Diverse Diterpenoids from Microdesmis casearifolia
- 关键词:
- Microdesmis casearifolia; Microdesmis genus; diterpenoid; casearoids Asimilar to D; spectroscopic analysis; electronic circular dichroism(ECD) analysis;KEAYANA; DERIVATIVES; CEMBRANOLIDES; LEAVES; ROOTS; PLANT
- Han, Guanghui;Ren, Yuhao;Fan, Yaoyue;Ji, Kailong;Zhou, Bin;Cao, Weiguo;Yue, Jianmin
- 《CHINESE JOURNAL OF ORGANIC CHEMISTRY》
- 2020年
- 40卷
- 9期
- 期刊
Four new diterpenoids, casearoids A similar to D (1 similar to 4), including dolabrane, orosane, labdane, and cembrane, were isolated and characterized from Aficrodesmis casearifolia. Their structures were elucidated by extensive spectroscopic data analysis. The absolute configurations of these diterpenoids were established by analysis of the electronic circular dichroism (ECD) data.
...9.Limonoids from Cipadessa baccifera
- 关键词:
- A-D; TETRANORTRITERPENOIDS; SKELETONS; CHEMISTRY; SEEDS
- Yu, Jin-Hai;Zhang, Hua;Zhou, Bin;Zimbres, Flavia M.;Dalal, Seema;Liu, Qun-Fang;Cassera, Maria B.;Yue, Jian-Min
- 《JOURNAL OF NATURAL PRODUCTS》
- 2020年
- 83卷
- 6期
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Eighteen new limonoids, including eight methyl angolensates (1-8) and 10 cipadesins (9-18), were isolated from the leaves of Cipadessa baccifera. Their structures were characterized by means of spectroscopic data analyses, single-crystal X-ray diffraction, and quantum chemistry computational methods. The C-6 configurations in those compounds possessing a C-6 hydroxy group were all assigned as S regardless of the magnitude of J(5,6), and the C-2' configuration in those bearing a 2-methylbutyryl residue was defined by single-crystal X-ray diffraction and NMR data. Compounds 1, 5, 6, 7, 11, and 12 showed moderate antimalarial activities with IC50 values ranging from 12 to 28 mu M.
...10.Crokonoids A-C, A Highly Rearranged and Dual-Bridged Spiro Diterpenoid and Two Other Diterpenoids from Croton kongensis
- Fan, Yao-Yue;Shi, Shu-Qin;Deng, Guo-Zhen;Liu, Hong-Chun;Xu, Cheng-Hui;Ding, Jian;Wang, Guan-Wu;Yue, Jian-Min
- 《ORGANIC LETTERS》
- 2020年
- 22卷
- 3期
- 期刊
Crokonoid A (1), a highly rearranged diterpenoid featuring a dual-bridged tricyclo[4.4.1.1(1,4)]dodecane-2,11-dione ring system and its two possible ent-kaurene diterpenoid precursors (2 and 3), was isolated and structurally characterized by solid data from Croton kongensis. Compound 1 exhibited significant cytotoxicity against HL-60 and A-549 cell lines with IC50 values of 1.24 +/- 0.56 and 1.92 +/- 0.60 mu M, respectively.
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