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Volumn , Issue 18, 2007, Pages 2891-2893

Concise total synthesis of (-)-muricatacin and (-)-iso-cladospolide B using chemoselective cross-metathesis

Author keywords

Chemoselectivity; Cross coupling; Dihydroxylations; Metathesis; Total synthesis

Indexed keywords

ACETOGENIN; CLADOSPOLIDE; MACROLIDE; MURICATACIN; UNCLASSIFIED DRUG;

EID: 36549032080     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2007-990958     Document Type: Article
Times cited : (38)

References (44)
  • 40
    • 36549052951 scopus 로고    scopus 로고
    • +].
    • +].
  • 41
    • 36549045924 scopus 로고    scopus 로고
    • Modified AD-mix: OsO4 (2 mol, DHQ)2PHAL for ADmix α (4 mol, or (DHQD)2PHAL for AD-mix γ (4 mol, MeSO2NH2 (1 equiv, K3Fe(CN)6 (3 equiv, K2CO3 3 equiv, t-BuOH-H2O, see ref. 8c
    • 2O, see ref. 8c.
  • 42
    • 36549022448 scopus 로고    scopus 로고
    • R (R,R) = 6.50 min].
    • R (R,R) = 6.50 min].
  • 43
    • 36549079909 scopus 로고    scopus 로고
    • Muricatacin (prepared in <1 mmol scale, mp 69-72°C (synthetic product3j mp 68-70°C, α]D20 -19.6 (c 1.0, CHCl3, isolated natural product5 [α]D20 -16.1; reported synthetic produce [α]D23 -19.5 (c 2.1, CHCl3, IR (neat, 3396, 3000-2800, 1727, 1470, 1176 cm-1. 1H NMR (400 MHz, CDCl3, δ, 4.41 (td, J, 7.5, 4.6 Hz, 1 H, 3.57 (m, 1 H, 2.62 (ddd, J, 17.8, 9.9, 5.0 Hz, 1 H, 2.54 (ddd, J, 17.8, 9.5, 9.0 Hz, 1 H, 2.30-2.20 (m, 1 H, 2.17-2.06 (m, 1 H, 1.88 (m, 1 H, OH, 1.60-1.18 (m, 22 H, 0.88 (t, J, 6.7 Hz, 3 H, 13C NMR (100 MHZ, CDCl3, δ, 177.1 (s, 82.9 (d, 73.7 (d, 33.0 (t, 31.9 (t, 29.6 (t, 29.6 (t, 29.6 (t, 29.5 (t, 29.5 (t, 29.5 (t, 29.3 (t, 28.9 (t, 25.4 (t, 24.1 (t, 22.7 (t, 14.1 (q, MS EI, m/z
    • +: 307.2244; found: 307.2239.
  • 44
    • 36549052033 scopus 로고    scopus 로고
    • iso-Cladospolide B (prepared in <1 mmol scale, α]D20 -61.6 (c 0.50, MeOH, isolated natural product4c [α]D28 -61.0 (c 16.6, MeOH, IR (neat, 3487, 3000-2800, 1745, 1462, 1329, 1165, 1097, 1042, 828 cm-1. 1HNMR (400 MHz, CDCl3, δ, 7.46 (dd, J, 5.8, 1.5 Hz, 1 H, 6.18 (dd, J, 5.8, 2.0 Hz, 1 H, 4.99 (dtapp, J, 4.5, 1.8 Hz, 1 H, 3.86-3.66 (m, 2 H, 2.21-1.81 (m, 2 H, OH, 1.66-1.26 (m, 10 H, 1.18 (d, J, 6.2 Hz, 3 H, 13C NMR (100 MHz, CDCl3, δ, 172.9 (s, 153.8 (d, 122.7 (d, 86.2 (d, 71.7 (d, 68.0 (d, 39.0 (t, 33.0 (t, 29.3 (t, 25.5 (t, 25.4 (t, 23.5 (q, ESI-HRMS ESI, m/z calcd for C12H 20O4, Na, 251.1248; found: 251.1253
    • +: 251.1248; found: 251.1253.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.