메뉴 건너뛰기




Volumn 2, Issue 1, 2005, Pages 89-91

Baker's yeast reduction of PEG-linked acetoacetate

Author keywords

Baker's yeast; Bioreduction; Organic solvent; PEG

Indexed keywords


EID: 33646194723     PISSN: 15701786     EISSN: None     Source Type: Journal    
DOI: 10.2174/1570178053400135     Document Type: Review
Times cited : (7)

References (27)
  • 9
  • 19
    • 46149096919 scopus 로고    scopus 로고
    • PEGn-2 (OCH2CH2O COCH2COCH3)2 (1, 97% mass recovery; 1H NMR, 400 MHz, CDCl3 (δ, 1.94 (0.3 H, s, CH3 of the enol form, 2.26 (2.7 H, S, CH3, 3.47 (1.8 H, s, CH2, 3.50-3.70 (bs, OCH2 of (PEG)n-2 fragment, 4.29 (2H, t, PEG-OCH2CH2-OCO, 5.02 (0.1 H, s, CH, ESI-MS (Electron Spray Ionisation, mass increments between native and functionalised PEG (1) calculated (84 Th) and measured (84.0-84.1 Th) for the two charge cluster are in complete accordance
    • 2-OCO), 5.02 (0.1 H, s, =CH); ESI-MS (Electron Spray Ionisation): mass increments between native and functionalised PEG (1) calculated (84 Th) and measured (84.0-84.1 Th) for the two charge cluster are in complete accordance.
  • 20
    • 46149105667 scopus 로고    scopus 로고
    • 4. The solution was concentrated to ca. 10 ml. Standard precipitation procedure afforded the polymer (2) (0.95 g, 95% mass recovery).
    • 4. The solution was concentrated to ca. 10 ml. Standard precipitation procedure afforded the polymer (2) (0.95 g, 95% mass recovery).
  • 22
    • 46149114897 scopus 로고    scopus 로고
    • Chiral HRGC analyses were performed on a DMePeBetaCDX (OV 1701) column (0.25 mm x 25 m), 70°C for 10 min, 2°C/min until 150°C, r.t. 18.8 min for the (S)-(+) enantiomer, 19.2 min for the (R)-(-) enantiomer.
    • Chiral HRGC analyses were performed on a DMePeBetaCDX (OV 1701) column (0.25 mm x 25 m), 70°C for 10 min, 2°C/min until 150°C, r.t. 18.8 min for the (S)-(+) enantiomer, 19.2 min for the (R)-(-) enantiomer.
  • 27
    • 46149127108 scopus 로고    scopus 로고
    • PEGn-2(OCH2CH2 OCOCH2CH (OH)CH3)2 (2):1H NMR, 400 MHz, CDCl3 (δ, 1.21 (3H, d, J 6.2, CH3, 2.47, 2.48 (2H, AB part of an ABX system, JAB 16.3, CH2CH(OH, 3.50-3.70 (bs, OCH2 of (PEG)n-2 fragment, 4.19 (1H, m, CHOH, 4.29 (2H, q, J 4.6, PEG-OCH2CH2-OCO, 13C NMR, 400 MHz, CDCl3 (δ, 172.6 (s, COO, 70.6 (t, OCH2 of (PEG)n-2 fragment, 68.9 (t, CH2OCO, 64.2 (d, CHOH, 63.5 (t, PEG-OCH2, 43.2 (t, CH2CH(OH, 22.5 (q, CH3, ESI-MS (Electron Spray Ionisation, mass increments between native and functionalised PEG-3 -hydroxybutanoate (2) calculated (86 Th) and measured (86.5±0.2 Th) for the two charge cluster are in accordance. PEG-acetoacetate (1, 2.7 g, 1.8 meq) was dissolved in 5
    • 211= -344 (0.048 M, MeOH) with 85% e.e.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.