The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present invention, it is possible to produce an organic electroluminescent device having low driving voltage and excellent luminous efficiency such as current efficiency and power efficiency, emitting color of high purity, and having improved lifespan.

The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present invention, it is possible to produce an organic electroluminescent device having low driving voltage and excellent luminous efficiency such as current efficiency and power efficiency, emitting color of high purity, and having improved lifespan.

The present invention concerns compounds of formula (I), enantiomers, mixture of enantiomers, diastereoisomers and mixture of diasteroisomers thereof formula (I): wherein at least one of W, X and Y is selected from the group consisting of —NR.sub.1R.sub.2; —NR.sub.3—(CH.sub.2).sub.n—NR.sub.4R.sub.5; —O—(CH.sub.2).sub.n—NR.sub.4R.sub.5; —NR.sub.3—(CH.sub.2).sub.n—N′R.sub.6R.sub.7R.sub.8; and —O—(CH.sub.2).sub.n—N′R.sub.6R.sub.7R.sub.8 and Z is a functional group capable of chelating iron salts. The present invention also concerns the compounds of formula (I) for use as a drug, in particular, in the treatment of cancer and malaria.

##STR00001##

The present invention concerns compounds of formula (I), enantiomers, mixture of enantiomers, diastereoisomers and mixture of diasteroisomers thereof formula (I): wherein at least one of W, X and Y is selected from the group consisting of —NR.sub.1R.sub.2; —NR.sub.3—(CH.sub.2).sub.n—NR.sub.4R.sub.5; —O—(CH.sub.2).sub.n—NR.sub.4R.sub.5; —NR.sub.3—(CH.sub.2).sub.n—N′R.sub.6R.sub.7R.sub.8; and —O—(CH.sub.2).sub.n—N′R.sub.6R.sub.7R.sub.8 and Z is a functional group capable of chelating iron salts. The present invention also concerns the compounds of formula (I) for use as a drug, in particular, in the treatment of cancer and malaria.

##STR00001##

The present invention provides compounds of formula (I): compositions comprising such compounds; the use of such compounds in therapy (for example in the treatment or prevention of a disease, disorder or condition ameliorated by inhibition of a dopamine transporter); and methods of treating patients with such compounds; wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.9, R.sup.10, Q, X, Y, Z, A, L, B, m, n and p are as defined herein.

##STR00001##

A method for preparing dihydroartemisinin bulk drug in single process comprises: S1. dissolving artemisinin in aprotic solvent; S2. adding phase transfer catalyst and reducing agent in sequence to cause a reduction reaction with artemisinin; S3. adjusting the pH of the reaction system obtained in step S2 to 5-7 with acid solution, adding water and stirring, separating the liquids, extracting the aqueous phase obtained by the separation with the same aprotic solvent as in step S1, combining the organic phase obtained by extraction and separation, washing with water, and drying, obtaining dried organic phase; S4. placing the dried organic phase obtained in step S3 in a crystallization device that has the functions of crystallization-press filtration-drying, and then the crystals are precipitated, concentrated, press-filtered, and dried to obtain the refined dihydroartemisinin.

A method for preparing dihydroartemisinin bulk drug in single process comprises: S1. dissolving artemisinin in aprotic solvent; S2. adding phase transfer catalyst and reducing agent in sequence to cause a reduction reaction with artemisinin; S3. adjusting the pH of the reaction system obtained in step S2 to 5-7 with acid solution, adding water and stirring, separating the liquids, extracting the aqueous phase obtained by the separation with the same aprotic solvent as in step S1, combining the organic phase obtained by extraction and separation, washing with water, and drying, obtaining dried organic phase; S4. placing the dried organic phase obtained in step S3 in a crystallization device that has the functions of crystallization-press filtration-drying, and then the crystals are precipitated, concentrated, press-filtered, and dried to obtain the refined dihydroartemisinin.

Disclosed are cationic lipids which are compounds of Formula I. Cationic lipids provided herein can be useful for delivery and expression of mRNA and encoded protein, e.g., as a component of liposomal delivery vehicle, and accordingly can be useful for treating various diseases, disorders and conditions, such as those associated with deficiency of one or more proteins.

##STR00001##

Disclosed are cationic lipids which are compounds of Formula I. Cationic lipids provided herein can be useful for delivery and expression of mRNA and encoded protein, e.g., as a component of liposomal delivery vehicle, and accordingly can be useful for treating various diseases, disorders and conditions, such as those associated with deficiency of one or more proteins.

##STR00001##

The present disclosure relates to the reversal of T cell exhaustion using aplysiatoxin analogs or PKC theta agonist compounds for anti-cancer immunotherapy. The treatment with aplysiatoxin analogs or PKC theta agonist compounds improve the anti-tumour activity of a T cell, inducing a NFAT-dependent T cell activation, increasing the pool of immune-checkpoint inhibitor responsive T cells, increasing lymphocyte infiltration and increasing the population of activated CD4+ and/or CD8+ cells. The methods of the present disclosure provide treatment of tumors and infections.