메뉴 건너뛰기




Volumn 7, Issue 7, 1997, Pages 811-816

Lipase-catalysed enantioselective hydrolysis of bicyclo[3.2.0]heptanol esters in supercritical carbon dioxide

Author keywords

[No Author keywords available]

Indexed keywords

BICYCLO[3.2.0]HEPTANE DERIVATIVE; TRIACYLGLYCEROL LIPASE;

EID: 0030907423     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0960-894X(97)00103-0     Document Type: Article
Times cited : (11)

References (33)
  • 1
    • 51249179162 scopus 로고
    • Hammond, D.A.; Karel, M.; Klibanov, A.M. Appl. Biochem. Biotech., 1985, 11, 393-400. Nakamura, K.; Chi, J.M.; Jamada, J.; Jano, T. Chem. Eng. Commun., 1985, 45, 207-212. Randolph, T.W.; Blanch, H.W.; Prausnitz, J.M; Wilke, C.R. Biotechnol. Lett., 1985, 7, 325-328.
    • (1985) Appl. Biochem. Biotech. , vol.11 , pp. 393-400
    • Hammond, D.A.1    Karel, M.2    Klibanov, A.M.3
  • 2
    • 84953470833 scopus 로고
    • Hammond, D.A.; Karel, M.; Klibanov, A.M. Appl. Biochem. Biotech., 1985, 11, 393-400. Nakamura, K.; Chi, J.M.; Jamada, J.; Jano, T. Chem. Eng. Commun., 1985, 45, 207-212. Randolph, T.W.; Blanch, H.W.; Prausnitz, J.M; Wilke, C.R. Biotechnol. Lett., 1985, 7, 325-328.
    • (1985) Chem. Eng. Commun. , vol.45 , pp. 207-212
    • Nakamura, K.1    Chi, J.M.2    Jamada, J.3    Jano, T.4
  • 3
    • 0001279578 scopus 로고
    • Hammond, D.A.; Karel, M.; Klibanov, A.M. Appl. Biochem. Biotech., 1985, 11, 393-400. Nakamura, K.; Chi, J.M.; Jamada, J.; Jano, T. Chem. Eng. Commun., 1985, 45, 207-212. Randolph, T.W.; Blanch, H.W.; Prausnitz, J.M; Wilke, C.R. Biotechnol. Lett., 1985, 7, 325-328.
    • (1985) Biotechnol. Lett. , vol.7 , pp. 325-328
    • Randolph, T.W.1    Blanch, H.W.2    Prausnitz, J.M.3    Wilke, C.R.4
  • 4
    • 0006330208 scopus 로고
    • Balny, C.; Hayashi, R.; Heremans, K. and Masson, P., Eds. Colloque INSERM/John Libbey Eurotext
    • Perrut, M. High Pressure and Biotechnology. Balny, C.; Hayashi, R.; Heremans, K. and Masson, P., Eds. Colloque INSERM/John Libbey Eurotext., 1992, 224, 401-410.
    • (1992) High Pressure and Biotechnology , vol.224 , pp. 401-410
    • Perrut, M.1
  • 13
    • 0000760617 scopus 로고
    • Theil, F. Chem. Rev., 1995, 95, 2203-2227.
    • (1995) Chem. Rev. , vol.95 , pp. 2203-2227
    • Theil, F.1
  • 21
    • 0030889256 scopus 로고    scopus 로고
    • Lipase-catalysed enantioselective hydrolysis: Interpretation of the kinetic results in terms of frontier orbital localisation
    • in press
    • The initial rates of Lipolase-catalysed hydrolysis (μmol/min per 1.0 ml of Lipolase) in water of the substrates (1)-(6) were recorded on a pH-stat: (1) - 0, (2) - 1.36, (3) - 0.85, (4) - 0.42, (5) - very slow, (6) - 0. Details will be available in: "Lipase-Catalysed Enantioselective Hydrolysis: Interpretation of the Kinetic Results in Terms of Frontier Orbital Localisation" by O. Parve et al. Tetrahedron (in press).
    • Tetrahedron
    • Parve, O.1
  • 22
    • 0342653742 scopus 로고    scopus 로고
    • note
    • 6/EtOAc 10/1).
  • 24
    • 0343959700 scopus 로고    scopus 로고
    • note
    • The substrate (3) was prepared following the scheme: Formula Represented.
  • 26
    • 0343087955 scopus 로고    scopus 로고
    • note
    • 26 preparation. The reactor was placed in a thermostat with t°=39-40°C. Liquid carbon dioxide was pumped into the reaction vessel by a Chromatographic piston pump with cooled pumpheads (DuPont Instruments) until the pressure reached the desired value (200 bar). After the reaction time was over the samples were collected into methanol through a flow resistor. The samples were evaporated, separated over silica and analyzed. Acetone washings of the reactor system were not further investigated.
  • 27
    • 0343087957 scopus 로고    scopus 로고
    • note
    • 6)) (9) was obtained also supporting the conclusion that equilibrium was reached at 7-10% conversion under the conditions used.
  • 28
    • 0343087954 scopus 로고    scopus 로고
    • note
    • Humicola lanuginosa lipase preparation Lipolase 100T was kindly provided by Novo Nordisk.
  • 29
    • 0343087953 scopus 로고    scopus 로고
    • note
    • 2-tank; 2 - high pressure pump; 3 and 5 - pressure gauge; 4 and 7 - HPLC valve; 6 - reactor; 8 - resistor; 9 -sample collection; 10 - thermostat.
  • 31
    • 0342653738 scopus 로고    scopus 로고
    • note
    • The hydroxyesters (2) and (3) were hydrolysed readily to conv 35-40% at p=170 bar (other conditions were kept constant), while ketoester (4) was hydrolysed to conv. 2-3% under such pressure.
  • 32
    • 0342653739 scopus 로고    scopus 로고
    • note
    • 2 of the substrates (1)-(6) were calculated: (1) E=45, (2) E=8, (3) E=30, (4) E=40, (5) E=25; (6) E=18. The calculations were based on the e.e. of the reaction products (Table) as well as conversion rates 40% and 3% estimated for the substrates (1)-(3) and (4)-(6), respectively. These conversion rates have been estimated roughly by amounts as well as by e.e. of the starting material recovered. Moreover, the E values obtained correspond to the systems in equilibrium being therefore assumed probably to change during the process as well as to differ from those corresponding to the irreversible hydrolysis. Thus, in our opinion enantioselectivity has to be reinvestigated along with the optimisation of the process.
  • 33
    • 0342653734 scopus 로고    scopus 로고
    • note
    • 3. n-Hexane was found to be a worse medium giving a less clean product. Acetic acid and vinyl acetate as acyl donors were also successfully used.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.