摘要:
A multibranched polyoxyalkylene compound represented by the following formula (1): wherein R1 is the same or different and is a hydrocarbon group having 1 to 24 carbon atoms, OA1 and OA2 are the same or different and are an oxyalkylene group having 2 to 4 carbon atoms, n and m are the same or different and are an average number of moles of the oxyalkylene group added, n represents 0 to 1000, m is the same or different and represents 10 to 1000, X represents a functional group capable of reacting with an amino group, a mercapto group, an aldehyde group, a carboxyl group, a triple bond, or an azide group to form a chemical bond, and L1 and L2 are the same or different and are a single bond, an alkylene group, or an alkylene group in which at least one bond selected from an ester bond, a urethane bond, an amide bond, an ether bond, and an amino is interposed.
摘要:
A purification method in which, from a specific polyoxyalkylene derivative having a molecular weight of 8,800 to 100,000, an impurity differing in the number of hydroxyl groups is separated, the method including steps (A), (B), (C), and (D). Step (A): a step in which an aprotic organic solvent is used in an amount at least 5 times by weight the amount of the polyoxyalkylene derivative to dissolve the polyoxyalkylene derivative therein and give a solution; step (B): a step in which an adsorbent comprising an oxide containing at least one of aluminum and silicon is added to the solution in an amount 0.5 to 5 times by weight the amount of the polyoxyalkylene derivative to thereby yield a slurry; step (C): a step in which the slurry is stirred at 25° C. or higher; step (D): a step in which the polyoxyalkylene derivative is recovered from the slurry.
摘要:
A multibranched polyoxyalkylene compound represented by the following formula (1): CH2-L1-(OA1)n-L2-X CH(OA2)mOR1 CH(OA2)mOR1 CH(OA2)mOR1 CH2(OA2)mOR1 (1) wherein R1 is the same or different and is a hydrocarbon group having 1 to 24 carbon atoms, OA1 and OA2 are the same or different and are an oxyalkylene group having 2 to 4 carbon atoms, n and m are the same or different and are an average number of moles of the oxyalkylene group added, n represents 0 to 1000, m is the same or different and represents 10 to 1000, X represents a functional group capable of reacting with an amino group, a mercapto group, an aldehyde group, a carboxyl group, a triple bond, or an azide group to form a chemical bond, and L1 and L2 are the same or different and are a single bond, an alkylene group, or an alkylene group in which at least one bond selected from an ester bond, a urethane bond, an amide bond, an ether bond, and an amino is interposed.
摘要:
A phospholipid derivative represented by the following formula (1): wherein [PG]k represents a residue of polyglycerin having a polymerization degree of k, wherein k is 2 to 50, R1CO and R2CO independently represent an acyl group having 8 to 22 carbon atoms, symbol “a” independently represents an integer of 0 to 5, symbol “b” independently represents 0 or 1, M represents hydrogen atom, an alkali metal atom, an ammonium, or an organic ammonium, and k1, k2, and k3 represent numbers satisfying the following conditions: 1≦k1≦(k+2)/2, 0≦k2, and k1+k2+k3=k+2. The phospholipid derivative is highly safe for living bodies and can be suitably utilized in drug delivery systems such as liposome, and the like.
摘要:
A phospholipid derivative, utilizable for modification of liposomes and the like, which is a copolymer containing, as essential component units, a component unit A represented by the formula (1), a component unit B represented by the formula (2A) and/or the formula (2B), and a component unit C represented by the formula (3) [R1 and R2 represent hydrogen atom or methyl group, provided that R1 and R2 do not simultaneously represent methyl group; R3 represents a divalent hydrocarbon group having 1 to 3 carbon atoms; AO represents an oxyalkylene group having 2 to 4 carbon atoms; m represents an average molar number of the added oxyalkylene groups and is a number in the range represented as 4≦m≦100; R4 represents hydrogen atom, a hydrocarbon group or acyl group having 1 to 20 carbon atoms; R5CO and R6CO represent an acyl group having 8 to 24 carbon atoms; R7 represents a divalent hydrocarbon group having 2 to 4 carbon atoms; and X and Y represent hydrogen atom, an alkali metal atom, ammonium or an organic ammonium] wherein a molar ratio of the component unit A relative to a total of the component unit B and the component unit C is from 7/3 to 3/7, and the component unit C is contained at a ratio of from 1 to 4 moles per 1 mole of the copolymer.
摘要翻译:可用于脂质体改性的磷脂衍生物等,其是以式(1)表示的成分单元A,式(2A)表示的成分单元B和/或式 式(2B)和式(3)表示的成分单元C [R 1和R 2]表示氢原子或甲基,条件是R 0 > 1 SUP>和R 2不同时表示甲基; R 3表示具有1至3个碳原子的二价烃基; AO表示碳原子数2〜4的氧化烯基, m表示加成的氧化烯基的平均摩尔数,是在4≤M≤100的范围内的数字; R 4表示氢原子,碳原子数为1〜20的烃基或酰基, R 5 CO和R 6 CO表示具有8至24个碳原子的酰基; R 7表示具有2至4个碳原子的二价烃基; 并且X和Y表示氢原子,碱金属原子,铵或有机铵],其中组分单元A相对于组分单元B和组分单元C的总量的摩尔比为7/3至3 / 7,组分单元C的含量相对于1摩尔共聚物为1〜4摩尔。
摘要:
A polyalkylene glycol derivative containing a compound of the formula (1): wherein R is a hydrocarbon group having 1 to 24 carbon atoms, OA2 is an oxyalkylene group having 2 to 4 carbon atoms, the groups represented by R are the same or different from each other in one molecule, the groups represented by OA2 are the same or different from each other in one molecule, m is an average number of moles of the oxyalkylene group added, m represents 10 to 1000, and X represents a functional group capable of chemically reactive with a bio-related substance, polydispersity Mw/Mu of the above polyalkylene glycol derivative in gel permeation chromatography satisfying the following relationship: Mw/Mn≦1.07 wherein Mw represents a weight average molecular weight and Mn represents a number average molecular weight.
摘要:
A modified bio-related substance, wherein at least one poly(alkylene glycol)oxy group represented by the following formula (1) is combined in a molecule: wherein R is a hydrocarbon group having 1 to 24 carbon atoms, OA1 and OA2 are each an oxyalkylene group having 2 to 4 carbon atoms, the groups represented by R are the same or different from each other in one molecule, and the groups represented by OA2 are the same or different from each other in one molecule, n and m are each average number of moles of the oxyalkylene group added, n represents 0 to 1000, and m represents 10 to 1000.
摘要:
A modified bio-related substance, wherein at least one poly(alkylene glycol)oxy group represented by the following formula (1) is combined in a molecule: wherein R is a hydrocarbon group having 1 to 24 carbon atoms, OA1 and OA2 are each an oxyalkylene group having 2 to 4 carbon atoms, R and OA2 are the same or different from each other in one molecule, n and m are each average number of moles of the oxyalkylene group added, n represents 0 to 1000, and m represents 10 to 1000.
摘要翻译:一种改性的生物相关物质,其中至少一种由下式(1)表示的聚(亚烷基二醇)氧基在分子中组合:其中R是具有1至24个碳原子的烃基,OA 1和 OA 2各自为具有2〜4个碳原子的氧化烯基,R 1和OA 2在一个分子中相同或不同,n和m各自是加入的氧化烯基的平均摩尔数,n 表示0〜1000,m表示10〜1000。
摘要:
Provided are a thiol-reactive polyoxyalkylene-modified lipid which can be used to chemically modify bioactive substances and which can be used for drug delivery systems such as liposomes and a method for producing the same. The polyoxyalkylene-modified lipid is represented by the following formula (1): (wherein, R1 and R2 are hydrocarbon groups which are the same as or different from each other and which contain 4 to 24 carbon atoms, R3 is a divalent hydrocarbon group containing 1 to 6 carbon atoms, OA is oxyalkylene groups containing 2 to 4 carbon atoms, n is the average addition mole number of the oxyalkylene groups and is 5 to 1,000, and Z is a group containing either maleimide or iodoacetamide.)
摘要:
A method for producing a polyoxyalkylene derivative represented by the following general formula (1): Z(OA)n-OH]m (1) wherein Z is a residue of glycerin or diglycerin, OA is an oxyalkylene group having 2 to 4 carbon atoms, n is an average number of moles of the oxyalkylene group added and is 80 to 800, and m is 3 to 4, the method comprising steps (A), (B), (C), (D), (E), and (F) defined in the present description.