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Rho, Jung-Rae,Jun, Chang-Soo,Ha, Young-Ae,Yoo, Myung-Ja,Cui, Ming-Xun,Baek, Hwa-Seung,Lim, Jin-A,Lee, Young-Haeng,Chai, Kyu-Yun Korean Chemical Society 2007 Bulletin of the Korean Chemical Society Vol.28 No.8
Persicaside has been isolated as a new alkaloid natural compound from a methanol (EtOA)-soluble extract of Prunus persica seed. It was purified by a combination of chromatographic techniques and recrystallization. The structure of Persicaside was determined by extensive NMR experiments and mass ppectroscopic data. It inhibited nitric oxide (NO) and prostaglandin E2 (PGE2) production via suppression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2 expression in rat osteoblast sarcoma cells (ROS 17/2.8) in concentration-dependent manner whereas it spares the COX-1 enzyme activity.
Structure Elucidation for New Sestertepene Alkaloids from the Sponge Sacotragus sp.
Rho, Jung-Rae,Shin, Jong-Heon,Lee, Hyi-Seung Korean Magnetic Resonance Society 2003 Journal of the Korean Magnetic Resonance Society Vol.7 No.1
Sarcotragins C(1) and D(2), two novel compounds, have been isolated from the sponge Sarcotragus sp. collected from Jaeju Island, Korea. The structures of these compounds have been determined to be linear sesterterpene alkaloids on the basis of combined 1D and 2D NMR experiments. The stereochemistry involved was established by comparison of the NMR data with those reported for a similar compound.
Steroid compounds from the marine sponge Raspilia hirsute
Rho Jung-Rae Korean Magnetic Resonance Society 2006 Journal of the Korean Magnetic Resonance Society Vol.10 No.1
The methanolic extract of the marine sponge Raspilia hirsute collected from Keomun Island resulted in three types of sterols: a mixture of (24S)-Poriferasta-5, 25-diene-$3\beta$, 24-diol and (24R)-Stigmasta-5, 25-diene-$3\beta$, 24 -diol (1), 25,26,27-Trinorcholest-5-en-$3\beta$,24-diol (2), and Pregn-5-en-20-on-$3\beta$-ol (3). The isolation and structural determination of these sterols are reported here. Compound 1 showed moderate cytotoxicity against human Leukemia cell line K562.
Four sesquiterpenes isolated from a Marine Sponge Topsentia species
Rho, Jung-Rae Korean Magnetic Resonance Society 2014 Journal of the Korean Magnetic Resonance Society Vol.18 No.2
Three bicyclic and one monocyclic sesquiterpenoids were isolated from the marine sponge Topsentia species. Their planar structures were completely determined from a combination of extensive 1D and 2D NMR experiments, and also the relative stereochemistry on the chiral centers were established by the ROESY experiment. Compound 1 was determined as a new stereoisomer. Furthermore, the NMR spectral data for compounds 2 and 4, of which have not been reported, were listed. Four compounds did not show any cytotoxicity, instead compound 4 exhibited moderate antifungal activity against Candida albicans.
NMR study on secondary metabolites isolated from an identified tunicate
Rho, Jung-Rae Korean Magnetic Resonance Society 2004 Journal of the Korean Magnetic Resonance Society Vol.8 No.2
Four secondary metabolites from an unidentified tunicate were isolated by treatment with trichloroethyl chloroformate(TECF) or acetic anhydride in pyridine. Their structures were determined by an extensive NMR analysis and the configuration of diacetyl derivatives(3a, 4a) was assigned by comparing with NMR data of a similar compound. Three new naturally occurring compounds (1, 3, 4) showed potent brine shrimp lethality and antifungal effect against Candia albicans.
Rho, Jung-Rae,Subramaniam, Gurusamy,Choi, Hyukjae,Kim, Eun-Hee,Ng, Sok Peng,Yoganathan, K.,Ng, Siewbee,Buss, Antony D.,Butler, Mark S.,Gerwick, William H. American Chemical Society 2015 ORGANIC LETTERS Vol.17 No.6
<P>Gargantulide A (<B>1</B>), an extremely complex 52-membered macrolactone, was isolated from <I>Streptomyces</I> sp. A42983 and displayed moderate activity against MRSA. The planar structure of <B>1</B> was determined using 2D NMR, and its stereochemistry was partially established on the basis of NOESY correlations, <I>J</I>-based configuration analysis, and Kishi’s universal NMR database.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/orlef7/2015/orlef7.2015.17.issue-6/acs.orglett.5b00068/production/images/medium/ol-2015-00068j_0003.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ol5b00068'>ACS Electronic Supporting Info</A></P>
Isolation of a New Carotenoid Pigment from an Undescribed Gorgonian of the Genus Muricella
Rho, Jung-Rae,Seo, Youngwan,Cho, Ki Woong,Song, Jun-Im,Shin, Jongheon 이화여자대학교 생명과학연구소 1996 생명과학연구논문집 Vol.7 No.-
Muricellaxanthin, a novel carotenoid pigment has been isolated by activity-guided separation from an undescribed gorgonian of the genus Muricella collected from Jaeju Island. Structure of this compound has been determined by a combination of spectral methods. Stereochemistry has been defined by interpretation of nOe data and comparison of CD data with related compounds. Muricellaxanthin exhibited potent lethality against brine-shrimp larvae.
Rho, Jung-Rae,Hwang, Buyng Su,Sim, Chung Ja,Joung, Seewon,Lee, Hee-Yoon,Kim, Hyeon-Jin American Chemical Society 2009 ORGANIC LETTERS Vol.11 No.24
<P> Three new sesterterpenoids, phorbaketals A (<B>1</B>), B (<B>2</B>), and C (<B>3</B>) which have a spiroketal of the hydrobenzopyran moiety, were isolated from the Korean marine sponge <I>Phorbas</I> sp. Their complete structures were elucidated by spectral and chemical methods. They exhibited moderate cytotoxicity against human colorectal, hepatoma, and lung cancer cell lines. Furthermore, the cultivation of the bacterial fraction from the sponge afforded compound <B>1</B>.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/orlef7/2009/orlef7.2009.11.issue-24/ol902223m/production/images/medium/ol-2009-02223m_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ol902223m'>ACS Electronic Supporting Info</A></P>
김정수,박정래,노일환,원충희,김흥식,강신일,박찬홍,김달영,이철원,이찬규 公州大學校스포츠科學硏究所 1987 스포츠科學硏究所論文集 Vol.- No.1
Hearing impairement in varying degrees constitutes one of the most common disabilites affecting school aged children. Eight out of every 1,000 students under the age of twenty have significant hearing loss. Hearing disabilities range from slight to total loss of sound perception. Statistics indicate that only one out of every ten hearing impaired children will become deaf. Most motor activities can be included students may possess low levels of static and/ or dynamic balance, but the greatest majority possess normal motor and physical capabilities. All the hearing impaired youngsters should be properly assessed and given the identical testing batteries as normal children. Hearing impaired students have, essentialy, a communication handicap and suffer from inability to understand verbal instructions. All physical educators should be able to use minimal finger spelling and signing for hearing impaired students.