Abstract:
본 발명은 알파-갈락토실세라마이드 유도체, 이의 약학적으로 허용 가능한 염, 이의 제조방법 및 이를 유효성분으로 함유하는 면역보조용 약학적 조성물에 관한 것이다. 본 발명의 α-GalCer 아마이드 부분을 생물학적 등입체성을 가진 트리아졸로 변경한 화합물의 경우, 싸이토카인 IL-4와 IFN- γ 중 한쪽으로 분비를 유도함으로써, IL-4에 의해 조절되는 제1형 당뇨병과 다발성 경화증과 같은 자가 면역 질환의 유용한 치료제로 사용될 수 있다. [화학식 1]
Abstract:
An alpha-galactosylceramide derivative is provided to induce secretion of cytokine IL-4 or IFN-gamma by modifying an alpha-GalCer amide portion by a triazole having biological isosterism, thereby being used as a useful therapeutic agent of auto-immune diseases such as a type I diabetes and multiple sclerosis. An alpha-galactosylceramide derivative is represented by a formula(1a), wherein A is triazole or amide; and if the A is triazole, R is C1-35 alkyl which may be substituted or unsubstituted by at least one substituent selected from the group consisting of halogen, hydroxy, amino, amino substituted by at least one C1-20 alkyl, thiol, cyano, nitro, sulfonyl, phenyl, C1-30 alkoxy, C1-30 alkyl, C1-30 haloalkyl, C1-30 hydroxyalkyl, C1-30 alkoxyalkyl, C5-10 aryl, C5-10 heteroaryl, C5-10 arylalkyl and C5-10 heteroarylalkyl, and if the A is amide, R is C1-35 alkyl which is substituted by at least one substituent selected from the group consisting of halogen, hydroxy, amino, amino substituted by at least one C1-20 alkyl, thiol, cyano, nitro, sulfonyl, phenyl, C1-30 alkoxy, C1-30 alkyl, C1-30 haloalkyl, C1-30 hydroxyalkyl, C1-30 alkoxyalkyl, C5-10 aryl, C5-10 heteroaryl, C5-10 arylalkyl and C5-10 heteroarylalkyl. A method for preparing the alpha-galactosylceramide derivative comprises the steps of: (a) reacting a compound represented by a formula(2) with an alkyne compound to prepare an intermediate represented by a formula(4); and (b) reacting the intermediate of the formula(4) with Pd(OH)2 to remove a protecting group therefrom, wherein A is triazole, R1 is at least one of substituent R, which is defined above, and each Bn and PMB is benzyl or p-methoxybenzyl. A pharmaceutical composition for immunity adjuvant comprises the alpha-galactosylceramide derivative or a pharmaceutically acceptable salt thereof as an effective ingredient.