N-hydroxyalkylated polyamines, methods of making N-hydroxyalkylated polyamines, and drilling fluids containing N-hydroxyalkylated polyamines are provided, in which the N-hydroxyalkylated polyamine includes Formula (I): ##STR00001##
where R.sup.1 and R.sup.2 are independently a C or CH group; R.sup.3 is an aliphatic hydrocarbyl; R.sup.4 and R.sup.5 are independently acyclic hydrocarbyls, or R.sup.1, R.sup.2, R.sup.4, and R.sup.5 are covalently connected to form a cyclic hydrocarbyl; and R.sup.6, R.sup.7, R.sup.8, and R.sup.9 are independently acyclic hydrocarbyls or acyclic heterohydrocarbyls.

N-hydroxyalkylated polyamines, methods of making N-hydroxyalkylated polyamines, and drilling fluids containing N-hydroxyalkylated polyamines are provided, in which the N-hydroxyalkylated polyamine includes Formula (I): ##STR00001##
where R.sup.1 and R.sup.2 are independently a C or CH group; R.sup.3 is an aliphatic hydrocarbyl; R.sup.4 and R.sup.5 are independently acyclic hydrocarbyls, or R.sup.1, R.sup.2, R.sup.4, and R.sup.5 are covalently connected to form a cyclic hydrocarbyl; and R.sup.6, R.sup.7, R.sup.8, and R.sup.9 are independently acyclic hydrocarbyls or acyclic heterohydrocarbyls.

The invention provides branched trialkylamine oxides with improved properties. The trialkylamine oxides of the invention produced from branched trialkylamines, in one embodiment, can be made using certain branched C10-12 enals and aldehydes. The invention also provides an trialkylamine oxide having the formula: ##STR00001##
wherein R5, R6 and R7 are independently at least one of C3H7, C2H5, CH3, or H, or mixtures thereof; and wherein R5 and R6 are not H at the same time. In one embodiment, the trialkylamine oxides of the invention can be useful in making various products, for example, as surfactants.

The invention provides branched trialkylamine oxides with improved properties. The trialkylamine oxides of the invention produced from branched trialkylamines, in one embodiment, can be made using certain branched C10-12 enals and aldehydes. The invention also provides an trialkylamine oxide having the formula: ##STR00001##
wherein R5, R6 and R7 are independently at least one of C3H7, C2H5, CH3, or H, or mixtures thereof; and wherein R5 and R6 are not H at the same time. In one embodiment, the trialkylamine oxides of the invention can be useful in making various products, for example, as surfactants.

This invention provides for prodrug Compounds I, pharmaceutical compositions thereof, and their use in treating HIV infection.

##STR00001## wherein: X is C or N with the proviso that when X is N, R.sup.1 does not exist; W is C or N with the proviso that when W is N, R.sup.2 does not exist; V is C; E is hydrogen or a pharmaceutically acceptable salt thereof; and Y is selected from the group consisting of

##STR00002##

Also, this invention provides for intermediate Compounds II useful in making prodrug Compounds I.

##STR00003## wherein: L and M are independently selected from the group consisting of C.sub.1-C.sub.6 alkyl, phenyl, benzyl, trialkylsilyl, 2,2,2-trichloroethoxy and 2-trimethylsilylethoxy.

This invention provides for prodrug Compounds I, pharmaceutical compositions thereof, and their use in treating HIV infection.

##STR00001## wherein: X is C or N with the proviso that when X is N, R.sup.1 does not exist; W is C or N with the proviso that when W is N, R.sup.2 does not exist; V is C; E is hydrogen or a pharmaceutically acceptable salt thereof; and Y is selected from the group consisting of

##STR00002##

Also, this invention provides for intermediate Compounds II useful in making prodrug Compounds I.

##STR00003## wherein: L and M are independently selected from the group consisting of C.sub.1-C.sub.6 alkyl, phenyl, benzyl, trialkylsilyl, 2,2,2-trichloroethoxy and 2-trimethylsilylethoxy.

In a preferred embodiment, there is provided a process for separating an amine compound or a conjugate acid thereof and a carbamate compound or a conjugate acid thereof from a mixture having the amine compound, the carbamate compound, carbon dioxide and at least one anionic contaminant salt using an anionic exchange column, the process including passing the mixture through the column to obtain a first effluent and passing through the column an extraction fluid to obtain a second effluent, where the extraction fluid most preferably includes carbonic acid.

In a preferred embodiment, there is provided a process for separating an amine compound or a conjugate acid thereof and a carbamate compound or a conjugate acid thereof from a mixture having the amine compound, the carbamate compound, carbon dioxide and at least one anionic contaminant salt using an anionic exchange column, the process including passing the mixture through the column to obtain a first effluent and passing through the column an extraction fluid to obtain a second effluent, where the extraction fluid most preferably includes carbonic acid.

The invention provides an artificially synthesized single sphingosine lipid and use of delivering a nucleic acid thereof. More particularly, the invention provides Use or method for delivering a nucleic acid to a cell or a subject using a compound of Formula (I), a stereoisomer or a pharmaceutical acceptable salt thereof, or a combination comprising a compound of Formula (I), a stereoisomer or a pharmaceutical acceptable salt thereof,

##STR00001##

The present invention relates to a method for producing a 1,3-dioxan-5-one by a short-step and simple method from raw materials that are procurable easily and inexpensively, using, as a raw material, a 1,3-dioxane that is a mixture containing a 1,3-dioxolane. Provided is a method for producing a 1,3-dioxan-5-one, including using a mixture of a compound represented by the following formula (I) and a compound represented by the following formula (II) as a raw material, the method including a step of oxidizing the mixture under an oxidative esterification condition (step 2): ##STR00001##
wherein, in the formulae (I) and (II), R.sup.1 and R.sup.2 each independently represent a hydrogen atom or a monovalent hydrocarbon group, or R.sup.1 and R.sup.2 are bonded to each other to form a divalent hydrocarbon group for constituting a ring structure.