Tetrahedron p. 2917 - 2926 (1978)
Update date:2022-07-28
Topics:
Rocchiccioli
Jarreau
Pais
Three open chains precursors of a simplified model of a 14-membered cyclopeptide alkaloid, the ansapeptide , 1-oxa-2-isopropyl-3-amino-4,7-dioxo-5,8-diaza-6-benzyl[10] paracyclophane, were prepared, but ring closure failed. A discussion of this failure led to an attempted ring closure of ansapeptides having structures close to the former, but with larger rings. Three 15-, 17- and 18-membered ansapeptides were effectively synthesized. This result confirmed the existence of a special stretching in the 14-membered ring, explaining the difficulties in cyclisation.
Contact:86-513-84128750/13773795976
Address:No.48.Youyi West Road ,Rudong Development Zone,Jiangsu Province,China
Jinan Boss Chemical Industry Co., Ltd.【revoke the business license】
website:http://www.chemboss.com.cn
Contact:+86-531-58591595
Address:No2.Hualong Road, Jinan, China
Nanjing Norris Pharm Technology Co., Ltd.
Contact:+86-13901585132
Address:2 Qiande Road, Jiangning sciencepark Hi-Tech Zone, Nanjing, P.R.China
ZHIJIANG ZENVA SINO COMMERCE AND TRADE CO., LTD.
website:http://www.zenvasino.com
Contact:+86-138-72658998
Address:Shibeishan Road,Zhijiang, Hubei, China
Hangzhou Share Chemical Co., Ltd(expird)
Contact:+86-57187093700
Address:Hang Xing Road
Doi:10.1016/j.tetlet.2004.04.182
(2004)Doi:10.1016/S0008-6215(00)85493-2
(1979)Doi:10.1002/hlca.19820650412
(1982)Doi:10.1021/om040001q
(2004)Doi:10.1002/hlca.19520350412
(1952)Doi:10.1021/ja01651a059
(1954)
