메뉴 건너뛰기




Volumn , Issue 18, 2005, Pages 2369-2371

Lipase-catalyzed domino kinetic resolution of α-hydroxynitrones/ intramolecular 1,3-dipolar cycloaddition: A concise asymmetric total synthesis of (-)-rosmarinecine

Author keywords

[No Author keywords available]

Indexed keywords

ALPHA HYDROXYNITRONE DERIVATIVE; ISOXAZOLE DERIVATIVE; NITRONE DERIVATIVE; ROSMARINECINE; TETRAHYDROFLUORO[3,4 C]ISOXAZOLE DERIVATIVE; TRIACYLGLYCEROL LIPASE; UNCLASSIFIED DRUG;

EID: 19944372085     PISSN: 13597345     EISSN: None     Source Type: Journal    
DOI: 10.1039/b419426h     Document Type: Article
Times cited : (55)

References (20)
  • 11
    • 19944372988 scopus 로고    scopus 로고
    • note
    • We also observed the complete racemization of the stereogenic chiral centre of the optically pure 2 during its Mitsunobu reaction with 3 and its treatment with p-TsOH.
  • 12
    • 19944387535 scopus 로고    scopus 로고
    • note
    • We have discovered that the acetate of (5)-2 is stable against racemization under common basic conditions as well as acidic conditions at room temperature.
  • 16
    • 19944398991 scopus 로고    scopus 로고
    • note
    • CAL-B [Chirazyme® L-2, c.-f. C2, dry (12900 U/g lyo.)], a lipase immobilized on a polymer support, was used, which is commercially available from Roche Diagnostics GmbH. The same lipase is also on sale from Novozymes Inc. by the name NOVOZYM 435®. The commercial lipase was dried (1 mmHg, room temperature, overnight) prior to use.
  • 20
    • 19944367176 scopus 로고    scopus 로고
    • note
    • 7b in either acetone or MeCN caused racemization; however, its combination with the enzymatic domino reaction of (±)-2 resulted in an unsatisfactory yield (ca. 30%) mainly due to the Ru-catalyzed decomposition of 5.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.