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Volumn 14, Issue 10, 2004, Pages 2609-2611

Unexpected role of 5-OH in DPPH radical-scavenging activity of 4-thiaflavans. Revealed by theoretical calculations

Author keywords

DFT method; DPPH radical; Flavonoids; O H bond dissociation enthalpy; Substituent effect; Thiaflavans

Indexed keywords

1,1 DIPHENYL 2 PICRYLHYDRAZYL; FLAVAN DERIVATIVE; HYDROGEN; OXYGEN; SCAVENGER;

EID: 1942534239     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.bmcl.2004.02.066     Document Type: Article
Times cited : (18)

References (30)
  • 19
    • 1942427474 scopus 로고    scopus 로고
    • note
    • 3 have little effect on O-H BDE, according to the Hammett parameter of both groups.
  • 23
    • 1942427472 scopus 로고    scopus 로고
    • note
    • 9 are as follows: 188.09, 168.31, 157.31, 153.74, 156.37, 172.48, and 169.50 kcal/mol
  • 25
    • 1942459342 scopus 로고    scopus 로고
    • note
    • 9,10 Obviously, sulfide is an electron-donating group and sulfoxide is an electron-withdrawing group.
  • 28
    • 1942459343 scopus 로고    scopus 로고
    • note
    • The difference between the BDEs of 5-OH and 7-OH of 1 was corroborated by the pure DFT calculations on the basis set of (RO)B3LYP/6-31G(d) that both BDEs were 75.38 and 79.63 kcal/mol, respectively.
  • 30
    • 0004248818 scopus 로고    scopus 로고
    • E.T. Denisov, & T.G. Denisova. LLC Florida: CRC
    • Denisov E.T., Denisova T.G. Handbook of Antioxidants. 2nd ed. 2000;CRC, LLC Florida.
    • (2000) Handbook of Antioxidants 2nd Ed.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.