نتایج جستجو برای: naphthoquinone
تعداد نتایج: 1188 فیلتر نتایج به سال:
The distribution of the naphthoquinones ramentaceone and plumbagin was studied among 50 taxa genus Nepenthes. Naphthoquinone patterns support classifications based on homology plastid and/or nuclear genes to some extent, with predominant in sections Nepenthes, Urceolatae, Tentaculatae, Regiae, Insignes Villosae, both isomers present without clear predominance Pyrophytae Montanae. Only 9 96 spec...
Some representative quinones, viz. one naphthoquinone (plumbagin) and five anthraquinones (alizarin, purpurin, chrysazin, emodin, and anthrarufin), were subjected to electrocoagulation. It was found that the rate and extent of coagulation of these compounds appears to correlate with the number and relative position of their phenolic substituent groups, and that all of the coagulated quinones co...
A series of eight substituted bis-2-hydroxy-1,4-naphthoquinone derivatives was synthesized through lawsone condensation with various aromatic and aliphatic aldehydes under mild acidic conditions. The title compounds were evaluated for antileishmanial activity in vitro against Leishmania amazonensis and Leishmania braziliensis promastigotes; six compounds showed good activity without significant...
The mol-ecule of the title compound, C(11)H(7)ClO(3), is planar, with a maximum deviation of 0.0383 (10) Å from the naphthoquinone plane. An intra-molecular O-H⋯O hydrogen bond generates an S(6) ring motif. The crystal packing is stabilized by inter-molecular C-H⋯O hydrogen bonds. Short intra-molecular Cl⋯O [2.8234 (8) Å] and O⋯O [2.5530 (11) Å], and inter-molecular Cl⋯Cl [3.2777 (3) Å] contact...
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