The present application provides a hetero-cyclic compound capable of significantly enhancing lifetime, efficiency, electrochemical stability and thermal stability of an organic light emitting device, and an organic light emitting device comprising the hetero-cyclic compound in an organic material layer.

A compound of Chemical Formula 1:

##STR00001##

and an organic light emitting device including the same.

The compound represented by formula (1):

##STR00001##

wherein A, B, R.sup.1, and R.sup.2 are as defined in the description,
provides organic electroluminescence (EL) devices having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.

The compound represented by formula (1):

##STR00001##

wherein A, B, R.sup.1, and R.sup.2 are as defined in the description,
provides organic electroluminescence (EL) devices having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.

The present disclosure provides compounds of Formulas (I), (II), and pharmaceutically acceptable salts thereof. The compounds described herein are useful in treating proliferative diseases, for example, cancer (e.g., lung cancer), and infectious diseases (e.g., bacterial infections). ##STR00001##

The present disclosure provides compounds of Formulas (I), (II), and pharmaceutically acceptable salts thereof. The compounds described herein are useful in treating proliferative diseases, for example, cancer (e.g., lung cancer), and infectious diseases (e.g., bacterial infections). ##STR00001##

A process for producing a hydrate of a hydrochloride salt of 2,2′-((((((2-acetylnaphtho[2,3-b]furan-4,9-diyl)bis(oxy))bis(carbonyl))bis(azanediyl))bis(ethane-2,1-diyl))bis(azanediyl))diacetic acid of the formula: ##STR00001##
wherein the process comprises the following step: recrystallizing the hydrochloride salt of 2,2′-((((((2-acetylnaphtho[2,3-b]furan-4,9-diyl)bis(oxy))bis(carbonyl))bis(azanediyl))bis(ethane-2,1-diyl))bis(azanediyl))diacetic acid, in the presence of hydrochloric acid and a recrystallization solvent;
wherein the recrystallization solvent is methanol, ethanol, 2-propanol, diethyl ether, ethyl acetate, benzene, toluene, acetone, dichloromethane, chloroform, hexane, dimethylformamide, acetonitrile, or water; or mixed solvent thereof.

A process for producing a hydrate of a hydrochloride salt of 2,2′-((((((2-acetylnaphtho[2,3-b]furan-4,9-diyl)bis(oxy))bis(carbonyl))bis(azanediyl))bis(ethane-2,1-diyl))bis(azanediyl))diacetic acid of the formula: ##STR00001##
wherein the process comprises the following step: recrystallizing the hydrochloride salt of 2,2′-((((((2-acetylnaphtho[2,3-b]furan-4,9-diyl)bis(oxy))bis(carbonyl))bis(azanediyl))bis(ethane-2,1-diyl))bis(azanediyl))diacetic acid, in the presence of hydrochloric acid and a recrystallization solvent;
wherein the recrystallization solvent is methanol, ethanol, 2-propanol, diethyl ether, ethyl acetate, benzene, toluene, acetone, dichloromethane, chloroform, hexane, dimethylformamide, acetonitrile, or water; or mixed solvent thereof.

A solid form of (−)-Ambrox formed by a bioconversion process.

A solid form of (−)-Ambrox formed by a bioconversion process.