PHOTOCHROMISM. SYNTHESIS AND PROPERTIES OF INDOLINOSPIROBENZOTHIOPYRANS
作者:Sei’ichi Arakawa、Hirofumi Kondo、Jun’etsu Seto
DOI:10.1246/cl.1985.1805
日期:1985.12.5
Novel photochromic compounds, indolinospirobenzothiopyrans, were prepared and their properties in polymer films were examined. The absorption bands of the colored form lie around 100 nm deeper in the long-wave region of the spectrum than are the case with the common spiropyrans.
Synthesis and Antitumor Molecular Mechanism of Agents Based on Amino 2-(3′,4′,5′-Trimethoxybenzoyl)benzo[b]furan: Inhibition of Tubulin and Induction of Apoptosis
作者:Romeo Romagnoli、Pier Giovanni Baraldi、Carlota Lopez-Cara、Olga Cruz-Lopez、Maria Dora Carrion、Maria Kimatrai Salvador、Jaime Bermejo、Sara Estévez、Francisco Estévez、Jan Balzarini、Andrea Brancale、Antonio Ricci、Longchuan Chen、Jae Gwan Kim、Ernest Hamel
DOI:10.1002/cmdc.201100279
日期:2011.10.4
compound in this series is 2‐(3′,4′,5′‐trimethoxybenzoyl)‐3‐methyl‐5‐amino‐6‐methoxybenzo[b]furan (3 h), which inhibits cancer cell growth at nanomolar concentrations (IC50=16–24 nM), and interacts strongly with tubulin by binding to the colchicine site. Sub‐G1 apoptotic cells in cultures of HL‐60 and U937 cells were observed by flow cytometric analysis after treatment with 3 h in a concentration‐dependent
诱导细胞凋亡是一种很有前景的策略,可以导致发现在癌症化疗中具有活性的新分子。当细胞用靶向微管的试剂处理时,通常会观察到这种特性,微管是在细胞分裂中起关键作用的动态结构。苯并[ b ]呋喃等小分子作为微管蛋白聚合的抑制剂很有吸引力。合成并评价了一类基于2-(3',4',5'-三甲氧基苯甲酰基)苯并[ b ]呋喃分子骨架,氨基位于苯环不同位置的新型微管蛋白聚合抑制剂用于抗增殖活性、抑制微管蛋白聚合和细胞周期效应。苯并[ b的苯部分上的甲氧基取代模式]呋喃部分在影响抗增殖活性中起重要作用。在 5-氨基衍生物系列中,如果甲氧基取代基位于 C6 位置,则对细胞生长的抑制作用最大,而 C7 取代基会降低效力。该系列中最有前景的化合物是 2-(3',4',5'-三甲氧基苯甲酰基)-3-甲基-5-氨基-6-甲氧基苯并[ b ]呋喃 ( 3 h ),它以纳摩尔水平抑制癌细胞生长浓度 (IC 50 =16–24
A backbone amide protecting group for overcoming difficult sequences and suppressing aspartimide formation
作者:Abu‐Baker M. Abdel‐Aal、George Papageorgiou、Richard Raz、Martin Quibell、Fabienne Burlina、John Offer
DOI:10.1002/psc.2877
日期:2016.5
removing the amideprotectinggroup were explored. The protectinggroup is labile to acidolysis, following reduction of the nitro group to the aniline. The two main uses of backbone protection of preventing aspartimide formation and of overcoming difficultsequences are demonstrated, first with the synthesis of a challenging aspartimide‐prone test sequence and then with the classic difficultsequence ACP (65‐74)
Photosensitive compositions containing benzospiropyrans and uses thereof
申请人:StereoGraphics Limited Partnership
公开号:US05230986A1
公开(公告)日:1993-07-27
A Photohardenable composition consisting essentially of a free radical polymerizable compound, an electron donating coinitiator, and a benzospiropyran, wherein the benzospiropyran undergoes ring opening to form a merocyanine upon exposure to a actinic radiation or heat and exposure to a second 296 radiation causes the composition to harden.