Process for Preparation of Hexadecyl Cis-9-Tetradecenoate and Hexadecyl Cis-10-Tetradecenoate
申请人:Bethala Lakshmi Anu Prabhavathi Devi
公开号:US20110269987A1
公开(公告)日:2011-11-03
Hexadecyl cis-9-tetradecenoate commonly known as Cetyl myristoleate (CMO) is being used for the treatment of osteoarthritis and other joint inflammatory diseases, cis-9-Tetradecenoic acid (cis-9-myristoleic acid) is the main precursor for the preparation of CMO. As there are limited natural plant sources for cis-9-tetradecenoic acid, the present invention aimed at the synthesis of cis-9-tetradecenoic acid methyl ester from oleic acid methyl ester. As oleic acid is not available in pure form, this has to be isolated from oleic acid-rich oils like olive oil. cis-10-Tetradecenoic acid methyl ester, an isomer of cis-9-tetradecenoic acid was also prepared from undecenoic acid methyl ester, a derivative of castor oil. Undecenoic acid is easily available commercially in pure form. Hexadecyl cis-9-tetradecenoate and hexadecyl c/s-10-tetradecenoate were prepared by enzymatic transesterification of cis-9-tetradecenoic acid methyl ester and cis-10-tetradecenoic acid methyl ester with 1-hexadecanol (cetyl alcohol) respectively. Both the isomers of cetyl myristoleate were evaluated for anti arthritis, blocking inflammation and reduction of adjuvant-induced arthritis in rats.
十六烷基顺-9-十四碳烯酸盐通常被称为鲸蜡醇豆蔻酸酯(CMO),目前正被用于治疗骨关节炎和其他关节炎症疾病,顺-9-十四碳烯酸(顺-9-豆蔻酸)是制备CMO的主要前体。由于顺-9-十四碳烯酸的自然植物来源有限,本发明旨在从油酸甲酯合成顺-9-十四碳烯酸甲酯。由于油酸无法以纯净形式获得,因此需要从富含油酸的油类如橄榄油中提取。还从十一烯酸甲酯,即蓖麻油的衍生物,制备了顺-10-十四碳烯酸甲酯,这是顺-9-十四碳烯酸的异构体。十一烯酸在市场上容易以纯净形式获得。通过酶促转酯反应,分别用顺-9-十四碳烯酸甲酯和顺-10-十四碳烯酸甲酯与1-十六醇(鲸蜡醇)反应,制备了十六烷基顺-9-十四碳烯酸盐和十六烷基顺-10-十四碳烯酸盐。这两种鲸蜡醇豆蔻酸酯的异构体都进行了抗关节炎、阻断炎症和在大鼠中减少佐剂诱导关节炎的评价。