申请人:University of Florida
公开号:US05177064A1
公开(公告)日:1993-01-05
The invention provides compounds of the formula ##STR1## or a pharmaceutically acceptable salt thereof, wherein [D] is the residue of a drug having a reactive functional group, said functional group being attached, directly or through a bridging group, via an oxygen-phosphorus bond to the phosphorus atom of the ##STR2## moiety; R.sub.1 is C.sub.1 -C.sub.8 alkyl, C.sub.6 -C.sub.10 aryl or C.sub.7 -C.sub.12 aralkyl; R.sub.2 is hydrogen, C.sub.1 -C.sub.8 alkyl, C.sub.6 -C.sub.10 aryl, C.sub.4 -C.sub.9 heteroaryl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.3 -C.sub.7 cycloheteroalkyl or C.sub.7 -C.sub.12 aralkyl; and R.sub.3 is selected from the group consisting of C.sub.1 -C.sub.8 alkyl; C.sub.2 -C.sub.8 alkenyl having one or two double bonds; (C.sub.3 -C.sub.7 cycloalkyl)--C.sub.r H.sub.2r --wherein r is zero, one, two or three, the cycloalkyl portion being unsubstituted or bearing 1 or 2 C.sub.1 -C.sub.4 alkyl substituents on the ring portion; (C.sub.6 -C.sub.10 aryloxy)C.sub.1 -C.sub.8 alkyl; 2--, 3-- or 4-- pyridyl; and phenyl-C.sub.r H.sub.2r -- wherein r is zero, one, two or three and phenyl is unsubstituted, or is substituted by 1 to 3 alkyl each having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, halo, trifluoromethyl, dialkylamino having 2 to 8 carbon atoms or alkanoylamino having 2 to 6 carbon atoms. The compounds are adapted for targeted drug delivery, especially to the brain.
该发明提供了以下式化合物##STR1##或其药用可接受盐,其中[D]是具有反应性功能基团的药物残基,所述功能基团通过氧-磷键直接或通过桥接基团连接到##STR2##基团的磷原子;R.sub.1为C.sub.1 -C.sub.8烷基,C.sub.6 -C.sub.10芳基或C.sub.7 -C.sub.12芳基烷基;R.sub.2为氢,C.sub.1 -C.sub.8烷基,C.sub.6 -C.sub.10芳基,C.sub.4 -C.sub.9杂环芳基,C.sub.3 -C.sub.7环烷基,C.sub.3 -C.sub.7环杂基烷基或C.sub.7 -C.sub.12芳基烷基;R.sub.3选自C.sub.1 -C.sub.8烷基;具有一个或两个双键的C.sub.2 -C.sub.8烯基;(C.sub.3 -C.sub.7环烷基)--C.sub.r H.sub.2r--其中r为零、一、二或三,环烷基部分未取代或在环部分上带有1或2个C.sub.1 -C.sub.4烷基取代基;(C.sub.6 -C.sub.10芳氧基)C.sub.1 -C.sub.8烷基;2-、3-或4-吡啶基;和苯基-C.sub.r H.sub.2r--其中r为零、一、二或三,苯基未取代,或被1至3个烷基取代,每个烷基有1至4个碳原子,或被具有1至4个碳原子的烷氧基,卤素,三氟甲基,具有2至8个碳原子的二烷基氨基或具有2至6个碳原子的烷酰氨基取代。这些化合物适用于靶向药物传递,特别是到达大脑。