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Volumn 11, Issue 14, 2009, Pages 3108-3111

Concise synthesis of the bryostatin A-ring via consecutive C-C bond forming transfer hydrogénations

Author keywords

[No Author keywords available]

Indexed keywords

1,3 PROPANEDIOL; 1,3-PROPANEDIOL; BRYOSTATIN; PROPANEDIOL DERIVATIVE;

EID: 67650323885     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol901096d     Document Type: Article
Times cited : (45)

References (72)
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    • For selected reviews encompassing the biological properties of the bryostatins, see: a
    • For selected reviews encompassing the biological properties of the bryostatins, see: (a) Hale, K. J.; Hummersone, M. G.; Manaviazar, S.; Frigerio, M. Nat. Prod Rep. 2002, 19, 413.
    • (2002) Nat. Prod Rep , vol.19 , pp. 413
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  • 6
    • 84889498840 scopus 로고    scopus 로고
    • Wender, P. A.; Baryza, J. L.; Hilinski, M. K.; Horan, J. C.; Kan, C.; Verma, V. A. Beyond Natural Products: Synthetic Analogues of Bryostatin 1. In Drug Discovery Research: New Frontiers in the Post-Genomic Era; Huang, Z., Ed.; Wiley-VCH: Hoboken, NJ, 2007; pp 127-162.
    • (c) Wender, P. A.; Baryza, J. L.; Hilinski, M. K.; Horan, J. C.; Kan, C.; Verma, V. A. Beyond Natural Products: Synthetic Analogues of Bryostatin 1. In Drug Discovery Research: New Frontiers in the Post-Genomic Era; Huang, Z., Ed.; Wiley-VCH: Hoboken, NJ, 2007; pp 127-162.
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    • 33646448125 scopus 로고    scopus 로고
    • For recent contributions to the primary literature, see: a
    • For recent contributions to the primary literature, see: (a) Wender, P. A.; Verma, V. A. Org. Lett. 2006, 8, 1893.
    • (2006) Org. Lett , vol.8 , pp. 1893
    • Wender, P.A.1    Verma, V.A.2
  • 48
    • 20444477128 scopus 로고    scopus 로고
    • And ref 3c. (21) (a) Keck, G. E.; Truong, A. P. Org. Lett. 2005, 7, 2153.
    • (d) And ref 3c. (21) (a) Keck, G. E.; Truong, A. P. Org. Lett. 2005, 7, 2153.
  • 53
    • 33846995439 scopus 로고    scopus 로고
    • For selected reviews on C-C bond forming hydrogénation and transfer hydrogénation, see: a
    • For selected reviews on C-C bond forming hydrogénation and transfer hydrogénation, see: (a) Ngai, M.-Y.; Kong, J. R.; Krische, M. J. J. Org. Chem. 2007, 72, 1063.
    • (2007) J. Org. Chem , vol.72 , pp. 1063
    • Ngai, M.-Y.1    Kong, J.R.2    Krische, M.J.3
  • 62
    • 67650317688 scopus 로고    scopus 로고
    • For a report on carbonyl allylations, see:, DOI: 10.1021/ol901136w
    • (f) For a report on carbonyl allylations, see: Hassan, A.; Lu, Y.; Krische, M. J. Org. Lett. 2009, DOI: (10.1021/ol901136w).
    • (2009) Org. Lett
    • Hassan, A.1    Lu, Y.2    Krische, M.J.3
  • 63
    • 0021261945 scopus 로고    scopus 로고
    • This mechanism for enantiomeric enrichment is documented by Eliel and Midland: (a) Kogure, T, Eliel, E. L. J. Org. Chem. 1984, 49, 576
    • This mechanism for enantiomeric enrichment is documented by Eliel and Midland: (a) Kogure, T.; Eliel, E. L. J. Org. Chem. 1984, 49, 576.
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    • SEGPHOS: Saito, T.; Yokozawa, T.; Ishizaki, T.; Moroi, T.; Sayo, N.; Miura, T.; Kumobayashi, H. Adv. Synth. Catal. 2001, 343, 264.
    • SEGPHOS: Saito, T.; Yokozawa, T.; Ishizaki, T.; Moroi, T.; Sayo, N.; Miura, T.; Kumobayashi, H. Adv. Synth. Catal. 2001, 343, 264.
  • 70
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    • With regard to the assignment of relative and absolute stereochemistry, the optical rotation of C2-symmetric diol 2 was correlated with reported data (see ref 25 and Supporting Information, In the reverse prenylation of 3, the undesired diastereomer of adduct 4 obtained using (A)-SEGPHOS as ligand was used to complete the A-ring. As anticipated, the 1H NMR data did not match the reported data. In contrast, the A-ring diastereomer obtained using (S)-SEGPHOS as ligand in the prenylation step matches the reported data, notwithstanding a small difference in the ratio of diastereomers at C9
    • 2-symmetric diol 2 was correlated with reported data (see ref 25 and Supporting Information). In the reverse prenylation of 3, the undesired diastereomer of adduct 4 obtained using (A)-SEGPHOS as ligand was used to complete the A-ring. As anticipated, the 1H NMR data did not match the reported data. In contrast, the A-ring diastereomer obtained using (S)-SEGPHOS as ligand in the prenylation step matches the reported data, notwithstanding a small difference in the ratio of diastereomers at C9.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.