Disclosed herein is an oxalate salt/co-crystal (tianeptine oxalate) of (RS)-7-(3-chloro-6-methyl-6,11-dihydrodibenzo[c,f] [1,2]thiazepin-11-ylamino)heptanoic acid S,S-dioxide (tianeptine) as shown in Formula I:

##STR00001##

The present invention provides a compound having the structure:

##STR00001##

or a pharmaceutically acceptable salt or ester thereof, and a method of treating a subject afflicted with a pain, a depressive disorder, a mood disorder, an anxiety disorder, borderline personality disorder, opioid addiction, or opioid withdrawal symptoms by administering the compound to the subject.

The present invention provides a compound having the structure:

##STR00001##

or a pharmaceutically acceptable salt or ester thereof, and a method of treating a subject afflicted with a pain, a depressive disorder, a mood disorder, an anxiety disorder, borderline personality disorder, opioid addiction, or opioid withdrawal symptoms by administering the compound to the subject.

The present disclosure relates to a compound having the structure: Formula (I) or a pharmaceutically acceptable salt or ester thereof, for treating or preventing a neurological disorder, including Huntington's disease, Rett syndrome, and CDKL5 disorder.

##STR00001##

The present disclosure relates to a compound having the structure: Formula (I) or a pharmaceutically acceptable salt or ester thereof, for treating or preventing a neurological disorder, including Huntington's disease, Rett syndrome, and CDKL5 disorder.

##STR00001##

Disclosed herein is an oxalate salt/co-crystal (tianeptine oxalate) of (RS)-7-(3-chloro-6-methyl-6,11-dihydrodibenzo[c,f] [1,2]thiazepin-11-ylamino)heptanoic acid S,S-dioxide (tianeptine) as shown in Formula I: ##STR00001##

Disclosed herein is an oxalate salt/co-crystal (tianeptine oxalate) of (RS)-7-(3-chloro-6-methyl-6,11-dihydrodibenzo[c,f] [1,2]thiazepin-11-ylamino)heptanoic acid S,S-dioxide (tianeptine) as shown in Formula I: ##STR00001##

The present invention relates to a process for the preparation of certain 1,5-benzothiazepine compounds, and in particular to a process for the preparation of elobixibat. The process can be carried out under mild and safe conditions and may be used to prepare elobixibat on an industrial scale. The invention also relates to a process for the preparation of a crystalline monohydrate of elobixibat.

2-homopiperazine-1-yl-4H-1, 3-bensothiazine-4-one derivatives of formula (I) are provided. They are useful in the treatment of bacterial infections, in particular tuberculosis, buruli ulcer and leprosy. A process for the preparation of 2-(homo)piperazine 1, 3-benzothiazine-4-one hydrochlorides is also provided.

2-homopiperazine-1-yl-4H-1, 3-bensothiazine-4-one derivatives of formula (I) are provided. They are useful in the treatment of bacterial infections, in particular tuberculosis, buruli ulcer and leprosy. A process for the preparation of 2-(homo)piperazine 1, 3-benzothiazine-4-one hydrochlorides is also provided.