• 제목/요약/키워드: University Archives

검색결과 5,951건 처리시간 0.025초

A Synthetic Study on Cyclic Phosphate Derivatives of Seconucleosides as Potential Antiviral Agents (I) -Synthesis of 3',5'-cyclic phosphates of 2'-substituted secouridines and secoribavirins-

  • Hong, Kyong-Aie;Yang, Jae-Wook;Chun, Soo-Joon;Ha, Eun-Young;Kim, Joong-Hyup;Chun, Moon-Woo;Chung, Won-Keun
    • Archives of Pharmacal Research
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    • 제14권1호
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    • pp.30-34
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    • 1991
  • The synthetic study of 3',5-cyclic phosphates of 2'-substituted 2',3'-secouridines and 2',3'-secoribavirins toward development of new antiviral agents is described. These cyclic phosphates were synthesized from their respective 4-nitrophenyl 3',5'-cyclic phosphate triesters. These triesters were prepared from the corresponding 2'-azido and 2'-bromo 2',3'-seconucleosides.

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Flavonoids from the Aerial Parts of Lonicera japonica

  • Son, Kun-Ho;Park, Jung-Ok;Chung, Kyu-Charn;Chang, Hyeun-Wook;Kim, Hyun-Pyo;Kim, Ju-Sun;Kang, Sam-Sik
    • Archives of Pharmacal Research
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    • 제15권4호
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    • pp.365-370
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    • 1992
  • Seven flavonoids were isolated from the aerial parts of Lonicera japonica. Their structures were characterized as hydnocarpin 1, quercetin 2, ochnaflavone 3, ochnaflavone 4'-O-methylether 4, astragalin 5, isoquercitrin 6, and rhoifolin 7 by chemical and spectroscopic evidences.

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Synthesis of Antineoplaston A10 Analogs as Potential Antitumor Agents

  • Choi, Bo-Gil;Kim, Ok-Young;Chung, Byung-Ho;Cho, Won-Jea;Cheon, Seung-Hoon;Choi, Sang-Un;Lee, Chong-Ock
    • Archives of Pharmacal Research
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    • 제21권2호
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    • pp.157-163
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    • 1998
  • Several aniline mustard analogues were obtained by introducing N,N-bis(2-chloroethyl)amino moiety to phenyl ring of A10 analogues in order to increase reactivity of A10 analogs and selectivity into DNA. The in vitro antitumor activity of synthesized compounds was evaluated using five different solid tumor cell lines by SRB method. Aniline mustard analogues exhibited more potent antitumor activity than A10 analogs. Especially, m-aniline mustard of benzoyl analogue displayed remarkable antitumor activity.

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Phytochemical Constituents from the Herba of Artemisia apiacea

  • Lee, Sang-Hyun;Kim, Kyoung-Soon;Jang, Ji-Myun;Park, You-Mie;Kim, Yang-Bae;Kim, Bak-Kwang
    • Archives of Pharmacal Research
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    • 제25권3호
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    • pp.285-288
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    • 2002
  • Four compounds of a coumarin, a steroid and two flavonoids were isolated from the herba of Artemisia apiacea by open column chromatography. Their structures were elucidated as artemicapin C, apigenin, daucosterol and cacticin by chemical and spectroscopic analysis. This is the first report of the isolation of these compounds from this plant.

Diterpenoids from the Stem Barks of Croton robustus

  • Nattya-Ngamrojnavanich;Sorasaree-Tonseiengsom;Preecha-Lertpratchya;Sophon-Roengsumran;Songchan-Puthong;Amorn, Petsom
    • Archives of Pharmacal Research
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    • 제26권11호
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    • pp.898-901
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    • 2003
  • Three compounds were isolated from the stem barks of Croton robustus. Their structures were elucidated as trachyloban-19-oic, acid, trachyloban-19-ol and poilaneic acid by spectroscopic analysis. Among them, trachyloban-19-ol and methyl trachyloban-19-oate exhibited weak cytotoxic activity against gastric carcinoma and colon carcinoma with $ED_{50}$ of 9.2, 9.6 and 8.3, $9.1{\mu\textrm{g}}/mL$, respectively.

Synthesis and Biological Activities of 8-Arylflavones

  • Dao, Tran-Thanh;Kim, Soo-Bae;Sin, Kwan-Seong;Kim, Sang-Hee;Kim, Hyun-Pyo;Park, Hae-Il
    • Archives of Pharmacal Research
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    • 제27권3호
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    • pp.278-282
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    • 2004
  • A number of 8-arylflavones have been synthesized as congeners of wogonin and evaluated for their inhibitory activities of $PGE_2$ production. 8-Arylflavones were obtained from commercially available chrysin via two different synthetic pathways. Most 8-arylflavones exhibited much reduced inhibitory activities against COX-2 catalyzed $PGE_2$ production compared to that of wogonin. Functional group replacement at the 8-position of wogonin from methoxy to aryl group caused loss of inhibitory activity. Our present results imply that the functional group at the 8-position of flavones seems to play very important roles for bioactivity.

Pentacyclic Triterpenoids and Their Cytotoxicity from the Stem Bark of Styrax japonica S. et Z.

  • Kim, Mi-Ran;Lee, Hyang-Hee;Hahm, Kyung-Soo;Moon, Young-Hee;Woo, Eun-Rhan
    • Archives of Pharmacal Research
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    • 제27권3호
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    • pp.283-286
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    • 2004
  • The methylene chloride soluble fraction of MeOH extract from the stem bark of Styrax japonica S. et Z. (Styracaceae) showed significant cytotoxicity by SRB method against five human tumor cell lines. Four known pentacyclic triterpenoids, oleanolic aldehyde acetate (1), erythrodiol-3-acetate (2), euphorginol (3), and anhydrosophoradiol -3-acetate (4) were isolated by activity-guided fractionation. Their structures were determined by chemical and spectral analysis. Compounds 1-4 were isolated from S. japonica for the first time.

The Functional Results of Forearm and Upper Arm Replantation: Report on Two Cases

  • Yu, Chang Eun;Chae, Young Ju;Lee, Jun-Mo
    • Archives of Reconstructive Microsurgery
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    • 제23권2호
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    • pp.82-85
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    • 2014
  • Upper extremity replantation is relatively less commonly performed than finger or hand replantation. We have experienced one case of forearm replantation and one case of upper arm replantation. After the replantation, limb volume at the biceps brachii muscle level below the replantation level appeared to be appropriate, however, the motor function of the muscles and the sensitivity were disappointing. For replantation of forearm and upper arm, restoration of the motor function and sensitivity of the extremity below the amputation level as well as the morphologic reconstruction have to be considered.

광 배 근피 유리 판을 이용한 슬관절 구제 재건술 (Salvage Reconstruction of the Knee using Latissimus Dorsi Myocutaneous Free Flap)

  • 이준모;이주홍;최문기
    • Archives of Reconstructive Microsurgery
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    • 제11권2호
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    • pp.167-172
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    • 2002
  • The only treatment method for crushed soft tissue injuries in the proximal leg involving the knee joint is the microsurgical free flap transplantation, especially latissimus dorsi myocutaneous free flap is useful to cover the extensive soft tissue defects, therefore prevents iatrogenic below knee amputation and facilitates early wound healing, early ambulation and shortens hospital stay. Authors have treated the open amputation with crushed soft tissue and bone injuries in the proximal leg, and the repeated abrasion and infectious wound with traumatic neuroma in the below knee with myocutaneous free flap and succeeded to wear below knee amputation prosthesis and return to normal activities of the daily living in the relatively shorter period than usual.

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