ketophospholipids was prepared in which the above n-oxooctadecanoic acids were attached to the sn-2 position of a phosphatidylcholine with a palmitic acid chain at sn-1. To assist in assignment and detection several derivatives were prepared 13C-enriched in both carbonyls. The various homologs were intercalated into DMPC liposomes and give points specifically in the missing area of the previous polarity–penetration
在我们的同伴论文中,我们描述了两种同源的二羰基化合物系列(正氧
十八烷酸甲酯和相应的正氧
十八烷酸(n = 4-16))的制备和插入到
DMPC脂质体中。使用E T(30)溶剂极性-
化学位移相关性表和相应的计算穿透深度(以Å为单位),分析了各种羰基的13 C NMR
化学位移。数据点的迭代最佳拟合分析揭示了E T之间的指数相关性(30)微极性和脂质体双层的渗透深度(以Å为单位)。但是,这项研究仍不完整,因为该图在中等极性的重要区域内,即在E T(30)范围为41-45.5 kcal / mol的范围内,缺少数据点。为了纠正这一缺陷,制备了一个酮
磷脂家族,其中上述n-氧代
十八碳烯酸被连接到在sn -1处具有
棕榈酸链的
磷脂酰
胆碱的sn -2位置。为了协助进行赋值和检测,准备了几种衍
生物13C富含两个羰基。将各种同系物插入
DMPC脂质体中,并在先前的极性-穿透相关图的缺失区域中明确给出点。有趣的是,完