Revised Structure and Synthesis of Celastramycin A, A Potent Innate Immune Suppressor
摘要:
After searching for natural substances that regulate innate immunity using the ex vivo Drosophila culture system, a benzoyl pyrrole-type compound, celastramycin A, was identified and isolated as a potent suppressor. By synthesizing the previously reported structure 1 and another benzoyl pyrrole-type compound 2 reported in a Japanese patent, the correct structure of celastramycin A was confirmed to be 2. Compound 2 suppressed the production of IL-8 (IC50 0.06 mu g/mL) in human umbilical vein endothelial cells (HUVECs).
PROPHYLACTIC OR THERAPEUTIC AGENT FOR PULMONARY HYPERTENSION COMPRISING UNSATURATED 5-MEMBERED HETEROCYCLE-CONTAINING COMPOUND
申请人:TOHOKU UNIVERSITY
公开号:US20210299093A1
公开(公告)日:2021-09-30
The present invention provides a preventive or therapeutic agent for pulmonary hypertension, including a compound represented by the following formula (I) or a salt thereof: where: -A- represents —NH—, —S—, or —O—; R
1
and R
2
are identical to or different from each other, and each represent a hydrogen atom or an alkyl group; R
3
represents a hydrogen atom, a halogen atom, or an alkyl group; R
4
represents a hydrogen atom or an alkyl group; R
5
represents a hydrogen atom or an alkyl group; R
6
and R
7
are identical to or different each other, and each represent a hydrogen atom, a halogen atom, or an alkyl group; and R
6
and R
7
may form an unsaturated hydrocarbon six-membered ring together with a carbon atom to which R
6
is bonded and a carbon atom to which R
7
is bonded.
Revised Structure and Synthesis of Celastramycin A, A Potent Innate Immune Suppressor
After searching for natural substances that regulate innate immunity using the ex vivo Drosophila culture system, a benzoyl pyrrole-type compound, celastramycin A, was identified and isolated as a potent suppressor. By synthesizing the previously reported structure 1 and another benzoyl pyrrole-type compound 2 reported in a Japanese patent, the correct structure of celastramycin A was confirmed to be 2. Compound 2 suppressed the production of IL-8 (IC50 0.06 mu g/mL) in human umbilical vein endothelial cells (HUVECs).