Tetrahedron p. 8143 - 8152 (1990)
Update date:2022-09-26
Topics:
Bull
Dillen
Sefton
High-field n.m.r. analysis of four 3-methoxy-14β-estra-1,3,5(10),15-tetraen-17-ones provides evidence for conformational deformation of ring C to a twist-boat form in solution. These observations are supported by molecular mechanics (MM2) calculations, which predict that the ring C chair and ring C twist-boat conformers have similar steric energies, slightly favouring the latter. An X-ray crystal structure determination on 3-methoxy-14-methyl-14β-estra-1,3,5(10)-,15-tetraen-17-one revealed that ring C does indeed adopt a twist-boat conformation in the solid state.
View MoreXi'an Costrong Pharmaceutical Co., Ltd.
Contact:029- 68576496
Address:Room 2004,Shuibao Building,No.190,South Erhuan Rd, Yanta District,Xi'an,Shaan Xi,China
Changsha Yihai Chemical Technology Co.,ltd
website:http://www.cs-yihai.com/
Contact:0731- 85620465
Address:Room 23005, unit 2, the northern building of Xiangsong international building , NO.259 Shaoshan Road , Changsha , Hunan, China.(mainland)
Suzhou SuKaiLu Chemical Technology Co., Ltd.
Contact:+86-512-62766020
Address:Floor 4, Building 1, Xinyi Pharmaceutical Valley Wisdom Industrial Park, 415 Changyang Street, Suzhou Industrial Park, Jiangsu Province
SHANGHAI RC CHEMICALS CO.,LTD.
website:http://www.rcc.net.cn
Contact:+86-21-50322175
Address:Rm1415 Yinqiao Masion No.58 Jinxin Road Pudong Shanghai China
Zhejiang Sanmei Chemical Industry Co., Ltd
Contact:86-579-87633213
Address:Huchu Industrial Zone, Qingnian Rd., Wuyi County, Zhejiang Prov., China.
Doi:10.1039/P19910000219
(1991)Doi:10.1021/jo201561t
(2011)Doi:10.1002/ejoc.201800600
(2018)Doi:10.1021/cm301985q
(2012)Doi:10.1002/chem.201100644
(2011)Doi:10.1111/j.1747-0285.2011.01154.x
(2011)
