The present invention concerns a process for purifying an aromatic liquid compound, said process comprising at least a step in which said aromatic liquid compound is contacted with a zeolitic adsorbent material.

The present invention also concerns the use of a zeolitic adsorbent material for purifying an aromatic liquid compound.

The present invention relates to the use of 3,3′-dimethoxy-4,4′-dihydroxystilbene as an odorous substance, in particular for developing a vanilla odor under the action of light. Furthermore, the invention relates to a composition which contain 3,3′-dimethoxy-4,4′-dihydroxystilbene and additionally a carrier, fragrance compositions and/or an odorant material which contain said compound and a process for imparting or modifying an odor of compositions by adding said compound to these compositions. The invention additionally relates to a process for obtaining 3,3′-dimethoxy-4,4′-dihydroxystilbene from lignin-containing compositions.

The present invention relates to the use of 3,3′-dimethoxy-4,4′-dihydroxystilbene as an odorous substance, in particular for developing a vanilla odor under the action of light. Furthermore, the invention relates to a composition which contain 3,3′-dimethoxy-4,4′-dihydroxystilbene and additionally a carrier, fragrance compositions and/or an odorant material which contain said compound and a process for imparting or modifying an odor of compositions by adding said compound to these compositions. The invention additionally relates to a process for obtaining 3,3′-dimethoxy-4,4′-dihydroxystilbene from lignin-containing compositions.

The present invention relates to the use of 3,3′-dimethoxy-4,4′-dihydroxystilbene as an odorous substance, in particular for developing a vanilla odor under the action of light. Furthermore, the invention relates to a composition which contain 3,3′-dimethoxy-4,4′-dihydroxystilbene and additionally a carrier, fragrance compositions and/or an odorant material which contain said compound and a process for imparting or modifying an odor of compositions by adding said compound to these compositions. The invention additionally relates to a process for obtaining 3,3′-dimethoxy-4,4′-dihydroxystilbene from lignin-containing compositions.

The present invention relates to a process of extraction and purification of a stilbenoid, pterostilbene, from botanical sources. The process involves obtaining pterostilbene having high degree of purity and the present invention also relates to pure form of pterostilbene obtained. The invention also relates to complexing the pterostilbene with carriers such as cyclodextrin for improving its water solubility and bioavailability. The present invention also describes a process for inhibition of Histone Deacetylases using pterostilbene optionally along with a carrier, and a method of managing Poly Glutamine repeat disorders by the administration of pterostilbene optionally along with a carrier.

The present invention relates to a process of extraction and purification of a stilbenoid, pterostilbene, from botanical sources. The process involves obtaining pterostilbene having high degree of purity and the present invention also relates to pure form of pterostilbene obtained. The invention also relates to complexing the pterostilbene with carriers such as cyclodextrin for improving its water solubility and bioavailability. The present invention also describes a process for inhibition of Histone Deacetylases using pterostilbene optionally along with a carrier, and a method of managing Poly Glutamine repeat disorders by the administration of pterostilbene optionally along with a carrier.

The present invention relates to a process of extraction and purification of a stilbenoid, pterostilbene, from botanical sources. The process involves obtaining pterostilbene having high degree of purity and the present invention also relates to pure form of pterostilbene obtained. The invention also relates to complexing the pterostilbene with carriers such as cyclodextrin for improving its water solubility and bioavailability. The present invention also describes a process for inhibition of Histone Deacetylases using pterostilbene optionally along with a carrier, and a method of managing Poly Glutamine repeat disorders by the administration of pterostilbene optionally along with a carrier.

A method of purifying a divinyl ether compound having an alkylene skeleton may take place with low energy and in a simplified manner. Such a method for producing a divinyl ether compound may include: reacting a compound of formula (1)

##STR00001##

wherein R.sup.1 is an alkylene group having 4 to 20 carbon atoms, with acetylene by using an alkali metal catalyst; and purifying the divinyl ether compound of formula (2)

##STR00002##

which is obtained in the reacting, without an extraction.

A method of purifying a divinyl ether compound having an alkylene skeleton may take place with low energy and in a simplified manner. Such a method for producing a divinyl ether compound may include: reacting a compound of formula (1)

##STR00001##

wherein R.sup.1 is an alkylene group having 4 to 20 carbon atoms, with acetylene by using an alkali metal catalyst; and purifying the divinyl ether compound of formula (2)

##STR00002##

which is obtained in the reacting, without an extraction.

This application relates to methods and systems for drying polyol starters, as well as reaction mixtures including such polyol starters, and the preparation of polymers derived from such polyol starters. In some embodiments, the present invention encompasses methods of drying a polyol initiator compound, the method including the step of contacting a composition comprising a polyol initiator compound with one or more molecular sieves.