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Volumn 48, Issue 26, 2007, Pages 4523-4527

Synthesis of the C8-C20 and C21-C30 segments of pectenotoxin 2

Author keywords

Natural product synthesis; Pectenotoxin 2; Polyether macrolide

Indexed keywords

3 METHYL 3 BUTENOL; GLYCIDOL; MALIC ACID; PECTENOTOXIN 2; PHOSPHONIC ACID DERIVATIVE; TOXIN; UNCLASSIFIED DRUG;

EID: 34249288615     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2007.04.136     Document Type: Article
Times cited : (18)

References (57)
  • 13
    • 0035859345 scopus 로고    scopus 로고
    • Other synthetic studies, see:
    • Other synthetic studies, see:. Micalizino G.C., and Roush W.R. Org. Lett. 3 (2001) 1949
    • (2001) Org. Lett. , vol.3 , pp. 1949
    • Micalizino, G.C.1    Roush, W.R.2
  • 34
    • 2142858450 scopus 로고
    • The absolute stereochemistry at C11 of 8 was determined by new Mosher's method:
    • The absolute stereochemistry at C11 of 8 was determined by new Mosher's method:. Ohtani I., Kusumi T., Kashman Y., and Kakisawa H. J. Am. Chem. Soc. 113 (1991) 4092
    • (1991) J. Am. Chem. Soc. , vol.113 , pp. 4092
    • Ohtani, I.1    Kusumi, T.2    Kashman, Y.3    Kakisawa, H.4
  • 37
    • 34249323104 scopus 로고    scopus 로고
    • note
    • 3 of isopropyridene acetal 52 derived from 18 via 21 (Fig. 2).
  • 40
    • 34249275770 scopus 로고    scopus 로고
    • note
    • The use of 2,6-di-tert-butylpyridine was essential to obtain reproducible result.
  • 44
    • 34249278892 scopus 로고    scopus 로고
    • note
    • The optical yield of 11 was determined by HPLC using a chiral column [Daicel Chiralcel AD, eluent: hexane/2-propanol (9:1)].
  • 45
    • 84988087929 scopus 로고    scopus 로고
    • note
    • 3, c 0.5): Krohn, K.; Meyer, A. Liebigs Ann. Chem. 1994, 167}.
  • 48
    • 34249323832 scopus 로고    scopus 로고
    • note
    • The absolute stereochemistry at C14 of 33 was determined by new Mosher's method. See Ref. 13.
  • 49
    • 34249295664 scopus 로고    scopus 로고
    • note
    • The presence of the TMS group at C12-oxygen reduced stereoselectivity of the epoxidation step.
  • 50
    • 34249337179 scopus 로고    scopus 로고
    • note
    • 3, and between H16 and H19 in 37 (Fig. 3).
  • 51
    • 85022425406 scopus 로고
    • We found that a primary alkyl DMB ether was readily removed on treatment with TMSOTf/2,6-lutidine. This phenomenon was helpful for selective detachment of the DMB group of 37 in the presence of the PMB ether at C11. On the other hand, detachment of a DMB group from 29 during TMS ether formation was avoided by lowering the reaction temperature (Scheme 3). cf.
    • We found that a primary alkyl DMB ether was readily removed on treatment with TMSOTf/2,6-lutidine. This phenomenon was helpful for selective detachment of the DMB group of 37 in the presence of the PMB ether at C11. On the other hand, detachment of a DMB group from 29 during TMS ether formation was avoided by lowering the reaction temperature (Scheme 3). cf. Oriyama T., Yatabe K., Kawada Y., and Koga G. Synlett (1995) 45
    • (1995) Synlett , pp. 45
    • Oriyama, T.1    Yatabe, K.2    Kawada, Y.3    Koga, G.4
  • 53
    • 34249334721 scopus 로고    scopus 로고
    • note
    • +]: 1192.6196; found, 1192.6213.
  • 54
    • 34249286719 scopus 로고    scopus 로고
    • note
    • 3.
  • 56
    • 34249297700 scopus 로고    scopus 로고
    • note
    • 2, imidazole; (ii) Mg; (iii) DDQ, (iv) m-CPBA (yielding an almost single diastereomer); (v) CSA.] (Fig. 4).
  • 57
    • 34249336816 scopus 로고    scopus 로고
    • note
    • +]: 348.2301; found, 348.2300.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.