The present invention relates to a novel compound, a preparation method thereof, and a pharmaceutical composition containing the same as an active ingredient. The novel compound is presented by chemical formula (1) and has an activity of GPR40 receptor agonist. The GPR40 receptor agonist has effects of promoting insulin secretion and of inhibiting the rise in blood sugar caused by glucose loading. Therefore, the GPR40 receptor agonist can be advantageously used for a treating agent for diabetes and diabetes complications.본 발명은 인슐린 분비 촉진 작용과 당부하 후의 혈당 상승 억제 작용을 나타내는 당뇨병 및 당뇨 합병증의 치료제로 유용한 GPR40 수용체 효능제 활성을 갖는 화학식 (1)에 따른 신규 화합물, 그의 제조방법, 및 그를 활성성분으로서 함유하는 약제학적 조성물에 관한 것이다.[화학식 1]