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| 1 | New dammarane-type saponins from the leaves of Panax notoginseng显示文摘Two new triterpenoid saponins named notoginsenoside-Ng3(1) and notoginsenoside-Ng4(2) along with three known saponins (3-5), were isolated from a water extract of the leaves of Panax notoginseng. Their structures were elucidated by HRESIMS, NMR, X-ray techniques and acid hydrolysis. Moreover,compound 2 was characterized with the conjugated double bonds side-chain, which was rarely found in this plant. The absolute configuration of notoginsenoside Fa (3) with five sugars was confirmed by the single-crystal X-ray diffraction for the first time. Acetylcholinesterase inhibitory activity experiments were also conducted, all the isolated saponins showed weak inhibitory activities in the final concentration of 0.16 mmol/L. | Jiwu Huang Chuangjun Li Junzi Cao Jie Ma Yiqian Du Xinyi Liu Jingzhi Yang Dongming Zhang | 2019 | Chinese Chemical Letters2019，30，2： | 6 |
| 2 | Two new phenylpropanoid glycosides from the aerial parts of Lespedeza cuneata显示文摘Two new phenylpropanoid glycosides named cuneataside E(1) and cuneataside F(2), were isolated from the aerial parts of Lespedeza cuneata(Dum. Cours.) G. Don, whose structures were E and Z isomer, respectively. Their structures were elucidated on the basis of comprehensive spectroscopic analysis(UV, IR, HR-ESI-MS, 1D and 2D NMR). In in vitro bioassays at 10 μmol/L, compound 1showed moderate hepatoprotective activity against N-acetyl-p-aminophenol(APAP)-induced toxicity in He G2 cells. | Chuangfeng Zhang Jian Zhou Jingzhi Yang Chuangjun Li Jie Ma Dan Zhang Dongming Zhang | 2016 | Acta Pharmaceutica Sinica B2016，6，6： | 3 |
| 3 | Three unprecedented biphenyl derivatives bearing C6-C3 carbon skeleton from the bark of Magnolia officinalis var.biloba显示文摘(+)-Magoilgomer A[(±)-1]and magoilgomer B(2)were identified from the bark of Magnolia officinalis var.biloba.(+)-1 and(-)-1 were a pair of novel biphenyl derivatives featuring three C6-C3 subunits.2 was an unprecedented adduct containing magnolol and honokiol.These three oligomers possessed new parallel mode which should be biosynthesized from the coupling of three or four C6-C3 subunits.The structures of(±)-1 and 2 were elucidated based on the spectroscopic data analyses and electronic circular dichroism(ECD)calculations.2 exhibited neuroprotective effects of oxygen glucose deprivation-induced SK-N-SH cell injury. | Chuan Li Kailing Xu Chuangjun Li Jie Ma Xiaoliang Wang Dongming Zhang | 2020 | Chinese Chemical Letters2020，31，5： | 2 |
| 4 | Characteristic Dihydroagarofuran Sesquiterpenoids with Neuroprotective Effects from the Celastraceae Plant Tripterygium wilfordii显示文摘Ten new characteristic dihydroagarofuran sesquiterpenoids and three known ones were acquired from the Celastraceae plant Tripterygium wilfordii.Their structure characterizations were done through spectroscopic data,while compounds 10-12 were further con firmed by single crystal diffractions.Several dihydroagarofurans protected PC12 cells against H2O2-i nduced cytotoxicity as detected by CCK8 assay.Compounds 5-7 and 13 sign ificantly in creased the levels of reactive oxyge n species(ROS)and superoxide dismutase(SOD),and decreased malondialdehyde(MDA)levels.In addition,compounds 5-7 and 13 activated the Nrf2 signaling pathway and increased Nrf2,NQO1,and HO1 expression levels in PC12 cells after H_(2)O_(2) treatment. | Fangyou Chen Jing Wang Yongming Luo Chuangjun Li Jiwu Huang Jie Ma Dongming Zhang | 2021 | Chinese Journal of Chemistry2021，39，9： | 1 |
| 5 | Psiguamers A-C, three cytotoxic meroterpenoids bearing a methylated benzoylphloroglucinol framework from Psidium guajava and total synthesis of 1 and 2显示文摘Three sesquiterpene-based meroterpenoids psiguamers A-C(1-3)with new skeletons were isolated from Psidium guajava leaves.Compounds(±)-1 and(±)-2 were two pairs of humulene-de「ived meroterpenoids bearing a rare methylated benzoylphloroglucinol unit,while 3 was an unprecedented adduct of bicyclogermacrene and methylated benzoylphloroglucinol.Their structures were determined based on comprehensive analyses of spectroscopic data,calculated electronic circular dichroism(ECD)spectra,total synthesis,and X-ray crystallographic data.The biomimetic synthesis of(±)-1 and(±)-2 was achieved.Compound(+)-1 exhibited cytotoxic activities against five human tumor cell lines(HCT-116,HepG2,BGC-823,A549,and U251),with IC_(50) values of 2.94,9.01,6.45,5.42,and 5.33 μmol/L,respectively. | Jiwu Huang Chuangjun Li Jie Ma Yingda Zang Xingyan Sun Xiaoguang Chen Dongming Zhang | 2021 | Chinese Chemical Letters2021，32，5： | 1 |
| 6 | A chromosome-level genome assembly for Dracaena cochinchinensis reveals the molecular basis of its longevity and formation of dragon’s blood显示文摘Dracaena,a remarkably long-lived and slowly maturing species of plant,is world famous for its ability to produce dragon’s blood,a precious traditional medicine used by different cultures since ancient times.However,there is no detailed and high-quality genome available for this species at present;thus,the molecular mechanisms that underlie its important traits are largely unknown.These factors seriously limit the protection and regeneration of this rare and endangered plant resource.Here,we sequenced and assembled the genome of Dracaena cochinchinensis at the chromosome level.The D.cochinchinensis genome covers 1.21 Gb with a scaffold N50 of 50.06 Mb and encodes 31619 predicted protein-coding genes.Analysis showed that D.cochinchinensis has undergone two whole-genome duplications and two bursts of long terminal repeat insertions.The expansion of two gene classes,cis-zeatin O-glucosyltransferase and small auxin upregulated RNA,were found to account for its longevity and slow growth.Two transcription factors(bHLH and MYB)were found to be core regulators of the flavonoid biosynthesis pathway,and reactive oxygen species were identified as the specific signaling molecules responsible for the injuryinduced formation of dragon’s blood.Our study provides high-quality genomic information relating to D.cochinchinensis and significant insight into the molecular mechanisms responsible for its longevity and formation of dragon’s blood.These findings will facilitate resource protection and sustainable utilization of Dracaena. | Yanhong Xu Kaijian Zhang Zhonglian Zhang Yang Liu Feifei Lv Peiwen Sun Shixi Gao Qiuling Wang Cuicui Yu Jiemei Jiang Chuangjun Li Meifang Song Zhihui Gao Chun Sui Haitao Li Yue Jin Xinwei Guo Jianhe Wei | 2022 | Plant Communications2022，3，6： | 0 |
| 7 | Three new decarbonyl prenylphloroglucinols bearing unusual spirost subunits from Hypericum scabrum and their neuronal activities显示文摘Three novel polycyclic polyprenyled acylphloroglucinols,Hyperscabins A-C,were obtained from the aerial parts of Hypericum scabrum.They featured an unprecedented 5,5-spiro ketal subunit with the loss of C-2’carbonyl in the phloroglucinol ring.Their structures were characterized by extensive spectroscopic analyses,NMR calculations with DP4+analysis,calculated electronic circular dichroism(ECD)spectra and the application of modified Mosher’s methods.In the assay of[^(3)H]-5-HT and[^(3)H]-NE reuptake inhibition,compounds 1 and 2 showed good inhibito ry activity(81.8%and 83.2%)in 10μmol/L.In addition,compound 1 significantly increased cell viability in the experiment of oxygen and glucose deprivation/deoxygenation. | Jie Ma Guiyang Xia Yingda Zang Chuangjun Li Jianbo Yang Jiwu Huang Jianjun Zhang Yalun Su Aiguo Wang Dongming Zhang | 2021 | Chinese Chemical Letters2021，32，3： | 0 |
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