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Volumn 37, Issue 39, 1996, Pages 7043-7046

Assignment of absolute configuration of the α,β-unsaturated γ-methyl-γ-lactone of the Annonaceous acetogenins by a simple enzymatic method

Author keywords

[No Author keywords available]

Indexed keywords

ACETOGENIN; BUTENOLIDE; DEACETYLUVARICIN; LACTIC ACID; MOTRILIN; NEOANNONIN; ROLLINIASTATIN; SQUAMOCIN; UNCLASSIFIED DRUG;

EID: 0030599221     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/0040-4039(96)01592-4     Document Type: Article
Times cited : (18)

References (15)
  • 10
    • 0000831018 scopus 로고
    • Bergmeyer H.U. ed., Verlag Chemie, Academic Press, Inc.
    • 10. Gutmann, I.; Wahlefeld, A.W. in Bergmeyer H.U. ed., Methods of Enzymatic Analysis, Verlag Chemie, Academic Press, Inc. 1974, 3, 1464-1495.
    • (1974) Methods of Enzymatic Analysis , vol.3 , pp. 1464-1495
    • Gutmann, I.1    Wahlefeld, A.W.2
  • 11
    • 85030279565 scopus 로고    scopus 로고
    • note
    • 2O [57:57:86] v/v/v. The mixture was stirred two hours at 70°C before being filtered and concentrated. Water (0.5-1 ml) was then added to the residue and the solution was extracted with 3×0.5 ml AcOEt. The organic phases were evaporated and the residue was solubilized in (100-500 μl) buffered solution of 0.1 M TRIS/1N HCl pH=9/hydrazine [80:15:5] v/v/v. 20-50 μl of this alkaline solution were separately uncubated in turn with D-or L-LDH (10 μl) and 20-50 μl of 1% aqueous solution of NAD. Enzymatic preparations were incubated during 20 min at 40°C before HPLC analyses.
  • 12
    • 85030278510 scopus 로고    scopus 로고
    • note
    • 12. HPLC experiments : Column (Sup-Rs Spherisorb S5ODS2, 4.6 × 250 mm, Prolabo, France); mobile phase : aqueous solution of 0.2M TRIS/0.1N HCl pH=8/0.2M aqueous solution of 0.425 mM EDTA/MeOH [23.75:26.5:44.75:5] v/v/v/v; flow rate : 1 ml/min; specific UV detection of NADH at 340 nm (sensitivity could be increased using fluorimetric detection with 260 and 460 nm as excitation and emission wavelenghts respectively); sample volume injected : 20-50 μl.
  • 13
    • 85030275441 scopus 로고    scopus 로고
    • note
    • 13. Perspiration of the hands containing large amounts of L(+)-lactic acid, care must be taken to ensure that any parts that come in contact with the test solutions, e.g. pipette tips, are not touched with the fingers. Blank reactions were determined for the enzymatic preparations and compared with experimental results.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.