the presence of KOt-Bu, in 1,4-dioxane as a solvent, at 90–100 °C. The 8-bromobenzo[f]quinazolin-1(2H)-one 15 was synthesized via condensation of the ethyl or tert-butyl 2-amino-8-bromonaphthalene-1-carboxylate 6, 10 with formamide, followed by reaction with 3,4-dimethoxybenzyl bromide. However, the 6-bromobenzo[h]quinazolin-4(3H)-ones 19a, 19b were prepared from ethyl 4-bromo-1-[(tert-butoxycarbo
氨基和benzoquinazolinones的硫烷基-衍生物16A - Ç,20A - Ç和21A - ç使用bromobenzoquinazolinones钯催化的Buchwald-Hartwig偶联反应制备下15,图19A,19B和1-取代的哌嗪或硫醇。Pd(OAc)2与XantPhos的组合被证明是最有效的方法,可在90-100°C的KO t -Bu存在下,在1,4-二恶烷中作为溶剂使用。 8溴苯并[ ˚F ]喹唑啉-1(2 ħ) -酮15经由乙基的缩合或合成叔丁基2-氨基-8-溴萘-1-甲酸叔丁酯6,10与甲酰胺中,然后用3反应,4-二甲氧基苄基溴。然而,由4-溴-1-[[(叔丁氧基羰基)氨基]萘-2-羧酸乙酯(17)制备6-溴苯并[ h ]喹唑啉-4(3H)-酮19a,19b。 化合物16a,20a,20c对HT29和HCT116细胞系的潜在细胞毒性的生物学筛选显示,化合物20a具有显着的抗癌活性。
길이가 다른 칫솔모들이 교대로 배열된 칫솔
申请人:OH, Se In 오세인(420180010897)
公开号:KR20190001967U
公开(公告)日:2019-08-02
치실이 필요없도록 길이가 다른 칫솔모들이 교대로 배열된 칫솔이 개시된다. 상기 칫솔은 칫솔대 및 상기 칫솔대에 연결된 지지부, 및 상기 지지부 상에 형성된 제 1 칫솔모들 및 제 2 칫솔모들을 가지는 칫솔 헤드를 포함한다. 여기서, 상기 제 2 칫솔모들은 상기 제 1 칫솔모들보다 작은 길이를 가지며, 상기 제 1 칫솔모들과 상기 제 2 칫솔모들은 교대로 배열된다.
Disclosed herein too is a method that includes dispersing nanotubes in media that comprises flavin moieties substituted with solubilizing side chains, and/or non-flavin containing molecular species; self-assembling the flavin moieties and other non-flavin containing molecular species in a pattern that is orderly wrapped around the nanotubes to form a composite; introducing desired amounts of an optional reagent that competes with self-assembly in order to disturb the wrapping around nanotubes with moderate order; and centrifuging the mass of the nanotubes and the composites to extract the composite from other nanotubes that are not in composite form.