Tetrazolast (also known as MDL 26,024GO) is a tetrazoloquinoline derivative patented by Merrell Dow Pharmaceuticals, Inc. as an antiallergic and antiasthmatic agent. Tetrazolast was shown to be an orally absorbed mediator release inhibitor in the rat passive cutaneous anaphylaxis and passive peritoneal anaphylaxis tests. In addition, the compound was shown to both elicit and inhibit elicitation of the Bezold-Jarisch reflex in the dog. Tetrazolast also significantly reduced Ascaris-induced changes in pulmonary mechanics in cynomolgus monkeys. The compound inhibited both early and late phase antigen induced-changes in Ascaris-sensitive sheep, as well as the increased airway hyperreactivity which normally follows antigen challenge.

Camiglibose is a glucopyranoside and inhibitor of alpha-glucosidase with antihyperglycemic activity patented by Merrell Dow Pharmaceuticals. In rats, a single oral dose of Camiglibose administered simultaneously with 2 g/kg body wt sucrose resulted in a dose dependent reduction in the area under the 0- to 3-h glycemic response curve, A reduction in the glycemic response to sucrose was accompanied by reduced insulin secretion. Camiglibose was more effective against a sucrose load in streptozocin-administered rats than in control rats and was as effective after 16 daily doses as after a single dose. Doses that reduced the glycemic response to carbohydrate did not inhibit liver lysosomal a-glucosidase activity or cause lysosomal glycogen accumulation. In cynomolgus monkeys, an oral dose of 1 mg/kg Camiglibose reduced the glycemic and insulin responses to sucrose

Tezacitabine is a cytidine derivative patented by Merrell Dow Pharmaceuticals, Inc. as an antineoplastic and antiviral agent. Tezacitabine acts as irreversible ribonucleotide reductase inhibitor and DNA chain terminator. Tezacitabine shows as potent activity in a broad spectrum of tumor cell lines and in vivo tumor models, including human colon, prostate, and breast tumor xenografts, In clinical trials combination of Tezacitabine and 5-Fluorouracil exerts favor influences in patients with advanced solid tumors particularly in patients with esophageal and other gastrointestinal carcinomas.

Celgosivir is a butanoyl ester derivative of castanospermine, a compound derived from the Australian chestnut with activity against hepatitis C virus. Celgosivir rapidly converts to castanospermine in the body, where it is a potent inhibitor of alpha-glucosidase I, a host enzyme required for viral assembly, release, and infectivity.

Tezacitabine is a cytidine derivative patented by Merrell Dow Pharmaceuticals, Inc. as an antineoplastic and antiviral agent. Tezacitabine acts as irreversible ribonucleotide reductase inhibitor and DNA chain terminator. Tezacitabine shows as potent activity in a broad spectrum of tumor cell lines and in vivo tumor models, including human colon, prostate, and breast tumor xenografts, In clinical trials combination of Tezacitabine and 5-Fluorouracil exerts favor influences in patients with advanced solid tumors particularly in patients with esophageal and other gastrointestinal carcinomas.

Tetrazolast (also known as MDL 26,024GO) is a tetrazoloquinoline derivative patented by Merrell Dow Pharmaceuticals, Inc. as an antiallergic and antiasthmatic agent. Tetrazolast was shown to be an orally absorbed mediator release inhibitor in the rat passive cutaneous anaphylaxis and passive peritoneal anaphylaxis tests. In addition, the compound was shown to both elicit and inhibit elicitation of the Bezold-Jarisch reflex in the dog. Tetrazolast also significantly reduced Ascaris-induced changes in pulmonary mechanics in cynomolgus monkeys. The compound inhibited both early and late phase antigen induced-changes in Ascaris-sensitive sheep, as well as the increased airway hyperreactivity which normally follows antigen challenge.

Camiglibose is a glucopyranoside and inhibitor of alpha-glucosidase with antihyperglycemic activity patented by Merrell Dow Pharmaceuticals. In rats, a single oral dose of Camiglibose administered simultaneously with 2 g/kg body wt sucrose resulted in a dose dependent reduction in the area under the 0- to 3-h glycemic response curve, A reduction in the glycemic response to sucrose was accompanied by reduced insulin secretion. Camiglibose was more effective against a sucrose load in streptozocin-administered rats than in control rats and was as effective after 16 daily doses as after a single dose. Doses that reduced the glycemic response to carbohydrate did not inhibit liver lysosomal a-glucosidase activity or cause lysosomal glycogen accumulation. In cynomolgus monkeys, an oral dose of 1 mg/kg Camiglibose reduced the glycemic and insulin responses to sucrose

Celgosivir is a butanoyl ester derivative of castanospermine, a compound derived from the Australian chestnut with activity against hepatitis C virus. Celgosivir rapidly converts to castanospermine in the body, where it is a potent inhibitor of alpha-glucosidase I, a host enzyme required for viral assembly, release, and infectivity.

Celgosivir is a butanoyl ester derivative of castanospermine, a compound derived from the Australian chestnut with activity against hepatitis C virus. Celgosivir rapidly converts to castanospermine in the body, where it is a potent inhibitor of alpha-glucosidase I, a host enzyme required for viral assembly, release, and infectivity.

Tezacitabine is a cytidine derivative patented by Merrell Dow Pharmaceuticals, Inc. as an antineoplastic and antiviral agent. Tezacitabine acts as irreversible ribonucleotide reductase inhibitor and DNA chain terminator. Tezacitabine shows as potent activity in a broad spectrum of tumor cell lines and in vivo tumor models, including human colon, prostate, and breast tumor xenografts, In clinical trials combination of Tezacitabine and 5-Fluorouracil exerts favor influences in patients with advanced solid tumors particularly in patients with esophageal and other gastrointestinal carcinomas.