Abstract: Provided are an L-proline complex of a sodium-glucose cotransporter 2 inhibitor, and a monohydrate and a crystal of the L-proline complex. Specifically, provided are 1,6-dehydrated-1-C{4-chloro-3-[(3-fluoro-4-ethoxyphenyl)methyl]phenyl}-5-C-(hydroxymethyl)-?-L-idopyranose L-proline (a compound of formula (I)), a monohydrate and a type A crystal thereof, and a preparation method therefor. The obtained type A crystal of the compound of formula (I) has good chemical stability and crystal stability, and the crystallization solvent used has low toxicity and low residue, so the type A crystal can be better used in clinical treatment.

Abstract: A crystal form I of a Janus Kinase (JAK) inhibitor (3aR,5s,6aS)—N-(3-methoxyl-1,2,4-thiadiazole-5-yl)-5-(methyl(7H-pyrrolo[2,3-d]pyrimidine-4-yl)amino)hexahydrocyclopenta[c]pyrrole-2(1H)-formamide bisulfate of formula (I) is provided. Also provided is a method of preparing the crystal form I of the JAK inhibitor of formula (I). The preparation method includes crystallizing any crystal form or amorphous compound solid of formula (I) in a single organic solvent to obtain the form I crystal. The crystal form I has excellent crystal stability and chemical stability. Additionally, the crystal solvent used to produce the crystal form I has low toxicity and a relatively low content of residual solvent, making the compound better suited for clinical treatment.

Abstract: A crystal form I of a Janus Kinase (JAK) inhibitor (3aR,5s,6aS)-N-(3-methoxyl-1,2,4-thiadiazole-5-yl)-5-(methyl(7H-pyrrolo[2,3-d]pyrimidine-4-yl)amino)hexahydrocyclopenta[c]pyrrole-2(1H)-formamide bisulfate of formula (I) is provided. Also provided is a method of preparing the crystal form I of the JAK inhibitor of formula (I). The preparation method includes crystallizing any crystal form or amorphous compound solid of formula (I) in a single organic solvent to obtain the form I crystal. The crystal form I has excellent crystal stability and chemical stability. Additionally, the crystal solvent used to produce the crystal form I has low toxicity and a relatively low content of residual solvent, making the compound better suited for clinical treatment.

Abstract: A crystal form of JAK kinase inhibitor bisulfate and a preparation method thereof are provided. In particular, a type II crystal of (3aR,5s,6aS)—N-(3-methoxyl-1,2,4-thiadiazole-5-yl)-5-(methyl(7H-pyrrolo[2,3-d]pyrimidine-4-yl)amino)hexahydrocyclopenta[c]pyrrole-2(1H)-formamide bisulfate and a preparation method thereof are described. The preparation method includes steps of crystallizing any solid crystal form or amorphous compound of formula (I) in a single organic solvent or a mixed organic solvent to obtain a type II crystal form of the compound of formula (I). The type II crystal form of the compound of formula (I) obtained by the described methods has good crystal stability and chemical stability. In addition, the solvent used for crystallization has low toxicity and residue, which is better suited for use in clinical treatment.

Abstract: A crystal form of JAK kinase inhibitor bisulfate and a preparation method thereof are provided. In particular, a type II crystal of (3aR,5s,6aS)-N-(3-methoxyl-1,2,4-thiadiazole-5-yl)-5-(methyl(7H-pyrrolo[2,3-d]pyrimidine-4-yl)amino)hexahydrocyclopenta[c]pyrrole-2(1H)-formamide bisulfate and a preparation method thereof are described. The preparation method includes steps of crystallizing any solid crystal form or amorphous compound of formula (I) in a single organic solvent or a mixed organic solvent to obtain a type II crystal form of the compound of formula (I). The type II crystal form of the compound of formula (I) obtained by the described methods has good crystal stability and chemical stability. In addition, the solvent used for crystallization has low toxicity and residue, which is better suited for use in clinical treatment.

Abstract: Provided are an L-proline complex of a sodium-glucose cotransporter 2 inhibitor, and a monohydrate and a crystal of the L-proline complex. Specifically, provided are 1,6-dehydrated-1—C{4-chloro-3-[(3-fluoro-4-ethoxyphenyl)methyl]phenyl}-5—C-(hydroxymethyl)-?-L-idopyranose L-proline (a compound of formula (I)), a monohydrate and a type A crystal thereof, and a preparation method therefor. The obtained type A crystal of the compound of formula (I) has good chemical stability and crystal stability, and the crystallization solvent used has low toxicity and low residue, so the type A crystal can be better used in clinical treatment.

Abstract: The present invention relates to a bisulfate of a Janus kinase (JAK) inhibitor and a preparation method therefor. More specifically, the present invention relates to a (3aR,5s,6aS)—N-(3-methoxyl-1,2,4-thiadiazole-5-group)-5-(methyl(7H-pyrrolo[2,3-d]pyrimidine-4-group)amino)hexahydrocyclopenta[c]pyrrole-2(1H)-formamide bisulfate shown in the formula (I), a preparation method therefor, and an application thereof. The bisulfate shown in the formula (I) can be well suitable as a Janus kinase (JAK) inhibitor in clinical work for treating rheumatism or rheumatoid arthritis.

Abstract: The present invention relates to a bisulfate of a Janus kinase (JAK) inhibitor and a preparation method therefor. More specifically, the present invention relates to a (3aR,5s,6aS)-N-(3-methoxyl-1,2,4-thiadiazole-5-group)-5-(methyl(7H-pyrrolo[2,3-d]pyrimidine-4-group)amino)hexahydrocyclopenta[c]pyrrole-2(1H)-formamide bisulfate shown in the formula (I), a preparation method therefor, and an application thereof. The bisulfate shown in the formula (I) can be well suitable as a Janus kinase (JAK) inhibitor in clinical work for treating rheumatism or rheumatoid arthritis.