Condensation of catechin and epicatechin incorporating a tbs-protecting group

Heterocycles

Volumn 84, Issue 1, 2011, Pages 349-354

  Nakajima, Noriyuki ^a   Horikawa, Keiko ^a   Takekawa, Norimasa ^a   Hamada, Masahiro ^a   Kishimoto, Takao ^a  

^a TOYAMA PREFECTURAL UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84855961333     PISSN: 03855414     EISSN: 18810942     Source Type: Journal    
DOI: 10.3987/COM-11-S(P)58     Document Type: Article

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42. The ratio of (4α)-9 and (4β)-9 was determined by the isolation yields of each compound from silica gel preparative TLC separation (Merck 1.0 mm, hexane/EtOAc= 10/1, 3 times development).
43. 4, and concentrated. The crude product was purified with silica gel chromatography (hexane/EtOAc = 25/1) to give only 4α-12 (231 mg, 0.15 mmol, 84%) as an oil.