The presently claimed invention relates to a color developer, a process for its manufacture and its use as a component in heat sensitive recording material. The heat sensitive recording material is useful for thermographic printing.

The presently claimed invention relates to a color developer, a process for its manufacture and its use as a component in heat sensitive recording material. The heat sensitive recording material is useful for thermographic printing.

Disclosed are HPTS series derivatives and a synthesis method thereof, belonging to the field of organic synthesis. The HPTS series derivatives are prepared by introducing alkylamine or alcohol into sulfonic acid groups of HPTS. The synthesis method comprises the following steps: subjecting HPTS and phosphorus oxychloride to heating and reflux reaction for 12 hours under catalysis of DMF to obtain a reaction product; introducing the reaction product into ice water, stirring, precipitating solid, and performing suction filtration to obtain HPTS-SO.sub.2Cl; dissolving the HPTS-SO.sub.2Cl in tetrahydrofuran to prepare solution A, and dissolving alkylamine or alcohol in tetrahydrofuran to prepare solution B; mixing the solution A with the solution B and then reacting for 24 hours at normal temperature, obtaining a product by rotary evaporation, and obtaining a pure compound after separation through columns. The derivatives have strong fat solubility, overcome the defect of a very strong water solubility.

Disclosed are HPTS series derivatives and a synthesis method thereof, belonging to the field of organic synthesis. The HPTS series derivatives are prepared by introducing alkylamine or alcohol into sulfonic acid groups of HPTS. The synthesis method comprises the following steps: subjecting HPTS and phosphorus oxychloride to heating and reflux reaction for 12 hours under catalysis of DMF to obtain a reaction product; introducing the reaction product into ice water, stirring, precipitating solid, and performing suction filtration to obtain HPTS-SO.sub.2Cl; dissolving the HPTS-SO.sub.2Cl in tetrahydrofuran to prepare solution A, and dissolving alkylamine or alcohol in tetrahydrofuran to prepare solution B; mixing the solution A with the solution B and then reacting for 24 hours at normal temperature, obtaining a product by rotary evaporation, and obtaining a pure compound after separation through columns. The derivatives have strong fat solubility, overcome the defect of a very strong water solubility.

Disclosed are HPTS series derivatives and a synthesis method thereof, belonging to the field of organic synthesis. The HPTS series derivatives are prepared by introducing alkylamine or alcohol into sulfonic acid groups of HPTS. The synthesis method comprises the following steps: subjecting HPTS and phosphorus oxychloride to heating and reflux reaction for 12 hours under catalysis of DMF to obtain a reaction product; introducing the reaction product into ice water, stirring, precipitating solid, and performing suction filtration to obtain HPTS-SO.sub.2Cl; dissolving the HPTS-SO.sub.2Cl in tetrahydrofuran to prepare solution A, and dissolving alkylamine or alcohol in tetrahydrofuran to prepare solution B; mixing the solution A with the solution B and then reacting for 24 hours at normal temperature, obtaining a product by rotary evaporation, and obtaining a pure compound after separation through columns. The derivatives have strong fat solubility, overcome the defect of a very strong water solubility.

Described herein, inter alia, are Nurr1 receptor modulators and uses thereof. In an aspect is provided a method for treating a disease associated with dysregulation and/or degeneration of dopaminergic neurons in the central nervous system of a subject in need thereof, the method including administering to the subject in need thereof a therapeutically effective amount of a compound described herein.

Described herein, inter alia, are Nurr1 receptor modulators and uses thereof. In an aspect is provided a method for treating a disease associated with dysregulation and/or degeneration of dopaminergic neurons in the central nervous system of a subject in need thereof, the method including administering to the subject in need thereof a therapeutically effective amount of a compound described herein.

This invention provides a method of synthesizing new active compounds for pharmaceutical uses including cancer treatment, wherein the cancers comprise breast, leukocytic, liver, ovarian, bladder, prostatic, skin, bone, brain, leukemia, lung, colon, CNS, melanoma, renal, cervical, esophageal, testicular, splenic, kidney, lymphatic, pancreatic, stomach, eye and thyroid cancers. The active compounds are amine, sulfonamides, amide, and urea analogs of triterpene.

This invention provides a method of synthesizing new active compounds for pharmaceutical uses including cancer treatment, wherein the cancers comprise breast, leukocytic, liver, ovarian, bladder, prostatic, skin, bone, brain, leukemia, lung, colon, CNS, melanoma, renal, cervical, esophageal, testicular, splenic, kidney, lymphatic, pancreatic, stomach, eye and thyroid cancers. The active compounds are amine, sulfonamides, amide, and urea analogs of triterpene.

Processes for producing a N,N-dialkyl perfluoroalkyl-sulfonamide product of the formula R.sub.f—S(O).sub.2—NR.sub.aR.sub.b (I) in which R.sub.f represents fully or partially fluorinated alkyl groups with carbon 1 to 12 and R.sub.a and R.sub.b represents linear or branched or cyclic alkyl, alkene or alkyne groups with carbon 1 to 12, wherein R.sub.a=R.sub.b or R.sub.a≠R.sub.b. In some embodiments, a reaction proceeds by contacting a perfluoroalkylsulfonyl halide of the formula: X—S(O).sub.2—R.sub.f, (II), in which X represents F, Cl, Br or I, with dialkylamine of the formula HNR.sub.aR.sub.b, under conditions sufficient to produce the desired N,N-dialkyl perfluoroalkylsulfonamide product of Formula I. In some embodiments, the reaction is carried out using a solvent of Formula I.