Article(id=1218551266515534458, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1218551220327858844, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2018-0448, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1526313600000, receivedDateStr=2018-05-15, revisedDate=1526832000000, revisedDateStr=2018-05-21, acceptedDate=null, acceptedDateStr=null, onlineDate=1768454861525, onlineDateStr=2026-01-15, pubDate=1531324800000, pubDateStr=2018-07-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1768454861525, onlineIssueDateStr=2026-01-15, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1768454861525, creator=13701087609, updateTime=1768454861525, updator=13701087609, issue=Issue{id=1218551220327858844, tenantId=1146029695717560320, journalId=1189982191388893191, year='2018', volume='53', issue='7', pageStart='1017', pageEnd='1193', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1768454850513, creator=13701087609, updateTime=1768457068973, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218560525269651614, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1218551220327858844, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218560525269651615, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1218551220327858844, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1134, endPage=1138, ext={EN=ArticleExt(id=1218551267098542782, articleId=1218551266515534458, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=A new polyketide from a sponge-derived fungus, columnId=1218551199712858773, journalTitle=Acta Pharmaceutica Sinica, columnName=ORIGINAL ARTICLES·Medicinal Chemistry, runingTitle=null, highlight=null, articleAbstract=

A new polyketide:3R, 5R-(-)-talaroflavone (2), along with 15 known compounds were isolated from a EtOAc extract of a sponge-derived fungus Alternaria sp. F49. Compounds 1-2 and 3-4 were separated as two pairs of enantiomers by chiral HPLC from and . The structures of compounds 1-16 were elucidated by means of NMR and MS. Furthermore, the absolute configurations of compounds 1-2 were determined by single crystal X-ray diffraction experiment and CD analyses. Compounds 6, 8-10 were isolated from this genus (Alternaria sp.) for the first time. Compound 16 showed moderate COX-2 enzyme inhibitory activity with IC50 of 7.3 μmol·L-1.

, correspAuthors=Yong-qi TIAN, Yong-hong LIU, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2018 Acta Pharmaceutica Sinica. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Yong-qi TIAN, Shu-ting LIN, Yong-hong LIU), CN=ArticleExt(id=1218551268855956369, articleId=1218551266515534458, tenantId=1146029695717560320, journalId=1189982191388893191, language=CN, title=海绵真菌中一个新的聚酮类化合物, columnId=1218263721282028383, journalTitle=药学学报, columnName=研究论文·药物化学, runingTitle=null, highlight=null, articleAbstract=

利用硅胶柱色谱、凝胶柱、反向柱色谱和高效液相等手段对海绵来源的真菌Alternaria sp.F49在大米培养基中的代谢产物进行分离纯化,从中分离得到一个新的聚酮类化合物:3R,5R-(-)-talaroflavone(2)和15个已知化合物。是两个消旋体,通过手性柱分别将它们进行拆分得到1234两对对应异构体;通过核磁、质谱和文献比对确定了这些化合物的结构,运用X-单晶衍射及圆二色谱等手段确定了化合物12的绝对构型;化合物68~10首次从该属真菌(Alternaria)中分离出来;化合物16展示出中等的COX-2酶抑制活性,其IC50为7.3 μmol·L-1

, correspAuthors=田永奇, 刘永宏, authorNote=null, correspAuthorsNote=
* 田永奇, Tel:86-20-89023244, E-mail:;
刘永宏, E-mail:
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The chemical structures of compounds 116

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HPLC spectrum of compounds 1 and 2 on a chiral phase

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X-ray crystal structure and CD spectra of

, figureFileSmall=DHokiESzwuOdAaKs4YnCNw==, figureFileBig=a7oPqO4EY2ESNhy7JaMBDQ==, tableContent=null), ArticleFig(id=1218970818596491537, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218551266515534458, language=EN, label=null, caption=null, figureFileSmall=SpMF8cOcaPMp2wF4Hpee6A==, figureFileBig=zp4uHhZALNcC8ROmrRjYbA==, tableContent=null), ArticleFig(id=1218970818709737755, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218551266515534458, language=CN, label=Figure 4, caption=

CD spectra of

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Position δH mult
(J in Hz)
δc
1 169.2, C
3 92.3, C
3a 150.3, C
4 6.47 d (1.5) 102.6, CH
5 167.2, C
6 5.94 d (1.5) 99.7, CH
7 158.8, C
7a 105.5, C
8 1.77 s 13.5, CH3
9 3.76 s 56.3, CH3
2′ 166.1, C
3′ 6.40 s 130.9, CH
4′ 200.6, C
5′ 4.64 s 78.7, CH
), ArticleFig(id=1218970818969784627, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1218551266515534458, language=CN, label=Table 1, caption=

The 1H and 13C NMR data for 1-2(500/125 MHz, respectively in DMSO-d6)

, figureFileSmall=null, figureFileBig=null, tableContent=
Position δH mult
(J in Hz)
δc
1 169.2, C
3 92.3, C
3a 150.3, C
4 6.47 d (1.5) 102.6, CH
5 167.2, C
6 5.94 d (1.5) 99.7, CH
7 158.8, C
7a 105.5, C
8 1.77 s 13.5, CH3
9 3.76 s 56.3, CH3
2′ 166.1, C
3′ 6.40 s 130.9, CH
4′ 200.6, C
5′ 4.64 s 78.7, CH
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海绵真菌中一个新的聚酮类化合物
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田永奇 1, * , 林舒婷 1 , 刘永宏 2, *
药学学报 | 研究论文·药物化学 2018,53(7): 1134-1138
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药学学报 | 研究论文·药物化学 2018, 53(7): 1134-1138
海绵真菌中一个新的聚酮类化合物
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田永奇1, * , 林舒婷1, 刘永宏2, *
作者信息
  • 1.福州大学生物科学与工程学院, 福建 福州 350108
  • 2.中国科学院南海海洋研究所, 热带海洋生物资源与生态重点实验室, 广东 广州 510301

通讯作者:

* 田永奇, Tel:86-20-89023244, E-mail:;
刘永宏, E-mail:
A new polyketide from a sponge-derived fungus
Yong-qi TIAN1, * , Shu-ting LIN1, Yong-hong LIU2, *
Affiliations
  • 1. College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
  • 2. Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
出版时间: 2018-07-12 doi: 10.16438/j.0513-4870.2018-0448
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利用硅胶柱色谱、凝胶柱、反向柱色谱和高效液相等手段对海绵来源的真菌Alternaria sp.F49在大米培养基中的代谢产物进行分离纯化,从中分离得到一个新的聚酮类化合物:3R,5R-(-)-talaroflavone(2)和15个已知化合物。是两个消旋体,通过手性柱分别将它们进行拆分得到1234两对对应异构体;通过核磁、质谱和文献比对确定了这些化合物的结构,运用X-单晶衍射及圆二色谱等手段确定了化合物12的绝对构型;化合物68~10首次从该属真菌(Alternaria)中分离出来;化合物16展示出中等的COX-2酶抑制活性,其IC50为7.3 μmol·L-1

海绵共附生真菌  /  Alternaria sp.F49  /  次生代谢产物  /  波谱分析

A new polyketide:3R, 5R-(-)-talaroflavone (2), along with 15 known compounds were isolated from a EtOAc extract of a sponge-derived fungus Alternaria sp. F49. Compounds 1-2 and 3-4 were separated as two pairs of enantiomers by chiral HPLC from and . The structures of compounds 1-16 were elucidated by means of NMR and MS. Furthermore, the absolute configurations of compounds 1-2 were determined by single crystal X-ray diffraction experiment and CD analyses. Compounds 6, 8-10 were isolated from this genus (Alternaria sp.) for the first time. Compound 16 showed moderate COX-2 enzyme inhibitory activity with IC50 of 7.3 μmol·L-1.

sponge-derived fungus  /  Alternaria sp. F49  /  spectroscopic analysis  /  secondary metabolites
田永奇, 林舒婷, 刘永宏. 海绵真菌中一个新的聚酮类化合物. 药学学报, 2018 , 53 (7) : 1134 -1138 . DOI: 10.16438/j.0513-4870.2018-0448
Yong-qi TIAN, Shu-ting LIN, Yong-hong LIU. A new polyketide from a sponge-derived fungus[J]. Acta Pharmaceutica Sinica, 2018 , 53 (7) : 1134 -1138 . DOI: 10.16438/j.0513-4870.2018-0448
海洋真菌遗传背景复杂、代谢产物种类多、产量高, 目前已成为新天然产物的主要来源, 研究最多的真菌是曲霉(Aspergillus)和青霉(Penicillium), 而来源主要有海底泥、海绵、藻类、珊瑚等[1]。链格孢属(Alternaria)是分布很广泛的一类子囊菌, 因其能产生毒素, 通常被人们称作植物病原菌。然而, 并非所有的链格孢属物种都是病原体, 他们中有些已经显示出作为生物防治剂对抗入侵物种的前景, 有些菌种也被报道产生了多种生物活性代谢物[2]。本课题组从海绵中分离到一株链格孢属真菌, 在活性测试实验中, 发现其粗提物有较强的抗菌活性和卤虫致死活性。为了寻找结构新颖的活性分子, 对这株真菌的大米发酵产物进行了提取分离, 并从中得到1个新化合物(2)和15个已知化合物。通过核磁共振、质谱等方法并结合文献数据鉴定了这些化合物的结构(图 1), 分别为: 3S, 5S-(+)-talaroflavone (1)[3-5]、3R, 5R-(-)-talaroflavone (2)、S-(-)-isoochracinicacid (3)[6]R-(+)-isoochracinic acid (4)[6]、2, 5-dimethyl-7-hydroxychromone (5)[7]、5α, 8α-epidioxy-(22E, 24R)-ergosta-6, 22-dien-3β-ol (6)[8]、tenuissimasatin (7)[9]、tyrosol (8)[10]、methyl phydroxybenzeneacetate (9)[11]、tyrosol acetate (10)[12]、stemphyperylenol (11)[13]、altenuene (12)[14]、2-(2'S-hydroxypropyl)-5-methyl-7-hydroxychromone (13)[15]、rubralactone (14)[16]、alternariol (15)[17]和altenuisol (16)[18]。通过X-单晶衍射、圆二色谱等手段确定了化合物1、2的绝对构型; 化合物68~10首次从该属真菌(Alternaria)中分离出来; 化合物16展示出中等的COX-2酶抑制活性, 其IC50为7.3 μmol·L-1
化合物Ⅰ  无定形固体, 氢谱给出10个信号: 2个苯环氢信号、1个双键氢信号、1个连氧的次甲基氢信号、3个甲氧基信号和3个甲基氢信号。碳谱给出14个信号: 2个羰基信号、1个苯环、1个双键、1个连氧的季碳、1个连氧的次甲基、1个甲氧基和1个甲基。这些数据(表 1)都与talaroflavone的数据完全一致, 但之前的文献只报道了该化合物的平面结构和正的旋光数据[3-5]。为了确定该化合物的构型, 本研究培养了单晶(DMSO-MeOH = 1:9), 经晶体学检测及旋光数据分析:该化合物为外消旋体。根据单晶数据(CCDC 1502322)确定其消旋体构型为3R*, 5′R* (图 2)。用手性柱将该化合物拆分, 得到一对对应异构体(12)。化合物12的[α]D25分别为+143.5 (c 0.19 MeOH)和-144.0 (c 0.05, MeOH)。为了确定12的绝对构型, 采用spartan程序, 对化合物的各个构型进行构象分析, 采用MMFF94力场计算构象能量, 采用Gaussian 09在B3LYP/6-311G (d, p)水平下在甲醇溶剂中进行能量优化, 最后采用TD-DFT方法B3LYP/6-311G (d, p)水平下计算。通过对比实测ECD和计算ECD曲线, 将1确定为3S, 5S-(+)-talaroflavone; 将2确定为3R, 5R-(-)-talaroflavone (图 3), 化合物2为新化合物。
化合物Ⅱ (3、4)  黄色油状物, HR-ESI-MS给出相对分子质量为m/z 209.0439 [M + H]+, 推测分子式为C10H9O5。氢谱、碳谱并结合HSQC谱给出1个苯环、2个酯羰基、1个连氧的次甲基和1个亚甲基信号。这些数据与化合物isoochracinic acid的数据完全一致[6]。文献报道isoochracinic acid是以外消旋体存在的, 而所测得该化合物的旋光确实为0, 为了进一步研究该化合物的立体结构, 将其进行了手性拆分, 得到了1:1的对映异构体(34) (图 4), 34的[α]D25分别为: -11.0 (c 0.329 MeOH)和+11.0 (c 0.317 MeOH)。将旋光数据与文献比对确定了2个化合物各自的构型[6]。最后将化合物3定为S-(-)-isoochracinicacid, 化合物4定为R-(+)-isoochracinic acid。
核磁共振波谱仪: BruckerAvance DRX500型(500/125 MHz, TMS为内标)。高分辨质谱: Bruker micro TOF-QII mass spectrometer (Bruker, Fällanden, Switzerland)。X-单晶衍射仪(Smart 1000 CCD)。高效液相色谱仪: Agilent 1200 (泵型号: G1212C, 紫外检测器型号: G1315D), YMC-Pack (250 mm × 10 mm I.D. S-5 μm, 12 nm), Chiralpak IC (250 mm × 4.6 mm I.D. S-5 μm, 12 nm)。TLC:高效薄层色谱板(HPTLC)为德国Merck公司产品和烟台江友硅胶开发有限公司产品。显色剂: 10%硫酸香兰素溶液。常用有机试剂均为国产的分析纯产品。
真菌Alternaria sp. F49分离自海绵Callyspongoa sp., 由中国科学院南海海洋研究所林秀萍博士鉴定, 菌种保存于福州大学食品与海洋生物资源研究所。
Alternaria sp.F49在25 ℃的MB培养基上培养7天。将其接种到种子培养基中(麦芽浸膏15 g, 海盐2.5 g, 蒸馏水1 L, pH 7.4~7.8), 并在25 ℃的摇床中摇72 h (170 r·min-1)。将10 mL种子悬浮液接种到1 L的大米培养基中(大米200 g, 海盐2.5 g, 蒸馏水200 mL)放大发酵, 培养30天。
粗浸膏用硅胶柱、LH-20凝胶柱和高效液相得到化合物化合物1~16。具体过程为:发酵物切成小块浸泡到丙酮中1天, 然后过滤蒸干(A), 滤渣用乙酸乙酯提取3次(B)。将A、B合并后分别用石油醚、乙酸乙酯萃取, 最后得到乙酸乙酯相(24.4 g)。粗浸膏首先用中压硅胶柱进行分离, 流动相为石油醚(petroleum ether)/乙酸乙酯(EtOAc)梯度洗脱(V/V, 50:1, 30:1, 20:1, 10:1, 5:1, 1:1, 0:1)。洗脱下来的馏分用TLC检测并合并为7个馏分(Fraction 1~7)。Fraction 1 (2.2 g)用ODS柱(MeOH/H2O)及常压硅胶柱(petroleum ether/EtOAc)进行分离, 得到化合物6 (22.1 mg)。Fraction 2 (1.0 g)用ODS柱及HPLC [SP-RP HPLC, C18柱(YMC-Pack, ODS-A, S-5 μm × 12 nm 250 mm × 20 mm I.D.), 4 mL·min-1; 50% CH3CN/H2O + 0.1% TFA]分离得到化合物5 (5.3 mg)。Fraction 3 (4.1 g)用ODS柱得到5个馏分(Fr. 3.1~3.5)。Fr.3.1用HPLC纯化(13% CH3CN/H2O)得到化合物8 (17.0 mg)。Fr.3.2用HPLC纯化(30% CH3CN/H2O)得到化合物7 (4.3 mg)、9 (6.6 mg)。Fr.3.3用HPLC纯化(20% CH3CN/H2O)得到化合物10 (4.7 mg)。Fr.3.5用HPLC纯化(38% CH3CN/H2O + 0.1% TFA)得到化合物11 (3.4 mg)。Fraction 5 (2.5 g)用Sephadex LH-20 (MeOH)进行分离得到4个馏分(Fr. 5.1~5.4)。Fr. 5.2用HPLC纯化(50% CH3CN/H2O)及手性拆分(90% hexane/isopropanol, 70% hexane/ isopropanol)得到化合物1 (3.8 mg)、2 (1.0 mg)和化合物3 (6.58 mg)、4 (6.34 mg)。Fr.5.1用ODS柱及HPLC (90% CH3CN/H2O)得到化合物15 (12.1 mg)、16 (7.2 mg)。Fraction 7 (1.1 g)用ODS柱(MeOH/H2O)进行分离得到5个馏分(Fr. 7.1~7.5)。Fr. 7.2用HPLC纯化(15% CH3CN/H2O + 0.1% TFA)得到化合物12 (7.8 mg), Fr. 7.3用HPLC纯化(30% CH3CN/H2O)得到化合物13 (4.5 mg), Fr. 7.4用HPLC纯化(40% CH3CN/H2O)得到化合物14 (9.0 mg)。
化合物Ⅰ(1、2)  无色结晶(DMSO-MeOH = 1:9), CCDC号: 1502322, 单晶数据:分子式C14H12O6, M = 276.24;正交晶系: a = 23.768 4 (3) Å (1 Å = 0.1 nm), b = 6.883 36 (9) Å, c = 14.872 22 (19) Å, α = 90°, β = 94.837 1 (11)°, γ = 90°; 体积: 2 424.53 (5) Å3;温度: 150 (2) K; 空间群: C2/c; Z = 8;反射光测量值: 15 692;独立反射值: 2 144 [R(int) = 0.035];最后的R1值: 0.034 8 (Ⅰ > 2σ (Ⅰ); 最后的wR (F2)值: 0.038 9 (all data); The goodness of fit on F2: 1.054;单晶尺寸: 0.410 × 0.350 × 0.210 mm3。紫外UV (MeOH) λmax: 218、258、296 nm。
化合物Ⅱ (3、4)  黄色油状物, 核磁数据如下: 1H NMR (DMSO, 500 MHz): δH 7.51 (1H, t, J = 7.8 Hz, H-5), 7.02 (1H, d, J = 7.2 Hz, H-4), 6.89 (1H, d, J = 8.1 Hz, H-6), 5.68 (1H, dd, J = 8.1, 4.0 Hz, H-3), 3.05 (1H, dd, J = 16.6, 4.1 Hz, H-8), 2.63 (1H, dd, J = 16.6, 8.3 Hz, H-8); 13C NMR (DMSO, 125 MHz): δC 170.9 (C, C-9), 167.7 (C, C-1), 156.7 (C, C-7), 151.4 (C, C-7a), 136.0 (CH, C-5), 115.8 (CH, C-6), 112.4 (CH, C-4), 111.2 (C, C-3a), 76.0 (CH, C-3), 39.6 (CH2, C-8)。
将测试化合物溶于DMSO中, 并将终浓度设定为10 μmol·L-1。通过与对照孵育比较来计算抑制百分比, 实验流程参照Blobaum等[19]发表的文献。
  • 福州大学科研启动基金(XRC-1672)
  • 福州市科技局项目(2017-N-39)
  • 福建省教育厅项目(JAT170077)
  • 广东省海洋药物重点实验室(LMM)2018年度开放课题(2018011009)
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2018年第53卷第7期
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doi: 10.16438/j.0513-4870.2018-0448
  • 接收时间:2018-05-15
  • 首发时间:2026-01-15
  • 出版时间:2018-07-12
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  • 收稿日期:2018-05-15
  • 修回日期:2018-05-21
基金
福州大学科研启动基金(XRC-1672)
福州市科技局项目(2017-N-39)
福建省教育厅项目(JAT170077)
广东省海洋药物重点实验室(LMM)2018年度开放课题(2018011009)
作者信息
    1.福州大学生物科学与工程学院, 福建 福州 350108
    2.中国科学院南海海洋研究所, 热带海洋生物资源与生态重点实验室, 广东 广州 510301

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* 田永奇, Tel:86-20-89023244, E-mail:;
刘永宏, E-mail:
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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