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Volumn 10, Issue 14, 2008, Pages 3101-3104

Assignment of absolute configuration to SCH 351448 via total synthesis

Author keywords

[No Author keywords available]

Indexed keywords

ALKENE; BIOLOGICAL PRODUCT; LACTONE; SCH 351448;

EID: 52049101846     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol8011474     Document Type: Article
Times cited : (36)

References (40)
  • 18
    • 0030738752 scopus 로고    scopus 로고
    • For examples of ion-templated metathesis, see: (a) Mohr, B, Weck, M, Sauvage, J.-P, Grubbs, R. H. Angew. Chem, Int. Ed. Engl. 1997, 36, 1308-1310
    • For examples of ion-templated metathesis, see: (a) Mohr, B.; Weck, M.; Sauvage, J.-P.; Grubbs, R. H. Angew. Chem., Int. Ed. Engl. 1997, 36, 1308-1310.
  • 30
    • 34547958617 scopus 로고    scopus 로고
    • The most drastic change upon formation of calcium salt 25 from the free acid is found in their 13C NMR spectra, wherein the signal for the C1 carbon of the acid (δ 180.8 ppm) disappears after exposure to CaO. Furthermore, there are noticeable changes in peak patterns for the 60-90 ppm region: the free acid exhibits six signals whereas the calcium complex 25 exhibits only five (two of the peaks have become coincident, The differences seen in the 1H NMR spectra are subtle, consisting primarily of broadening of three peaks appearing between 2.5 and 4.0 ppm. Both compounds show an identical parent molecular ion (M, Na, by ES-MS. For references regarding NMR studies of calcium coordination complexes please see: (a) Chen, C.-S, Wu, S.-H, Wu, Y.-Y, Fang, J.-M, Wu, T. H. Org. Lett. 2007, 9, 2985-2988
    • +) by ES-MS. For references regarding NMR studies of calcium coordination complexes please see: (a) Chen, C.-S.; Wu, S.-H.; Wu, Y.-Y.; Fang, J.-M.; Wu, T. H. Org. Lett. 2007, 9, 2985-2988.
  • 39
    • 59949096343 scopus 로고    scopus 로고
    • 3). Both of these rotations were obtained from newly acid-equilibrated samples (ref 1). The reported rotation of synthetic (+)-SCH 351448 has varied from +22.4 to +79.9.
    • 3). Both of these rotations were obtained from newly acid-equilibrated samples (ref 1). The reported rotation of synthetic (+)-SCH 351448 has varied from +22.4 to +79.9.
  • 40
    • 59949089227 scopus 로고    scopus 로고
    • CD spectra are provided in the Supporting Information
    • CD spectra are provided in the Supporting Information.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.