Homologs of Idoxifene: Variation of Estrogen Receptor Binding and Calmodulin Antagonism with Chain Length
摘要:
A series of homologs of idoxifene [1a, (E)-1-[4-(N-pyrrolidinoethoxy)phenyl]-1-(4-iodophenyl)-2-phenyl-1-butene] and selected homologs of 4-iodotamoxifen [2a, (E)-1-[4-[N-dimethylamino)-ethoxy]phenyl]-1-(4-iodophenyl)-2-phenyl-1-butene] with the side chain (CH2)(n) varying in length from n = 3 (1b, 2b) to n = 10 (1i, 2i) have been synthesized and tested for antagonism of the calmodulin-dependent activity of cAMP phosphodiesterase and for binding affinity to rat uterine estrogen receptor. Compared with 1a (IC50 = 1.5 mu M), the homologs showed a progressive increase in calmodulin antagonism with a maximum inhibition at n = 7-9 (1f-h) (IC50 = 0.2 mu M), declining at n = 10 (1i) to IC50 = 1.6 mu M. In the pyrrolidino series, estrogen receptor binding affinity peaked at n = 3 (1b, RBA = 23; estradiol = 100), declining by n = 10 (1i) to RBA = 0.4, but the homolog n = 8 (1g, RBA = 3.5) was still comparable to tamoxifen (RBA = 3.9). A similar pattern of activity was seen for the dimethylamino counterparts. These compounds represent a new class of antiestrogens with potent calmodulin antagonism.
METHOD OF PRODUCING (METH)ACRYLOYL-TERMINATED POLYISOBUTYLENE POLYMER
申请人:Kaneka Corporation
公开号:EP3388454A1
公开(公告)日:2018-10-17
The object of the present invention is to provide a method for producing a (meth)acryloyl-terminated polyisobutylene polymer in which the auxiliary material used in the manufacture is easily removed, the burden of purification step and waste amount are decreased, and the transparency of the polymer is excellent. The method for producing the (meth)acryloyl-terminated polyisobutylene polymer contains a step 1 of polymerizing an isobutylene monomer under the presence of a Lewis acid catalyst to prepare a halogen-terminated polyisobutylene polymer (B), a step 2 of reacting the halogen-terminated polyisobutylene polymer (B) with a compound (C) having a halogen group and a phenoxy group under the presence a Lewis acid catalyst to prepare a halogenated phenoxyalkyl-terminated polyisobutylene polymer (D), and a step 3 of reacting the halogenated phenoxyalkyl-terminated polyisobutylene polymer (D) with an acrylic acid compound (E) to prepare the (meth)acryloyl-terminated polyisobutylene polymer (A).
Method of producing (meth)acryloyl-terminated polyisobutylene polymer
申请人:Kaneka Corporation
公开号:US10604598B2
公开(公告)日:2020-03-31
A method for producing a (meth)acryloyl-terminated polyisobutylene polymer includes a step 1 of polymerizing an isobutylene monomer under the presence of a Lewis acid catalyst to prepare a halogen-terminated polyisobutylene polymer (B), a step 2 of reacting the halogen-terminated polyisobutylene polymer (B) with a compound (C) having a halogen group and a phenoxy group under the presence a Lewis acid catalyst to prepare a halogenated phenoxyalkyl-terminated polyisobutylene polymer (D), and a step 3 of reacting the halogenated phenoxyalkyl-terminated polyisobutylene polymer (D) with an acrylic acid compound (E) to prepare the (meth)acryloyl-terminated polyisobutylene polymer (A).
It is thought that selective 5-HT4 receptor agonists-such as 4-amino-5-chloro-2-metboxy-N-[1-(6-oxo-6-phenylhexyl)piperidin-4-ylmethyl]benzamide (2)-have the ability to enhance both upper and lower gastrointestinal motility without any significant adverse effects.Modification of 2 was performed. Variation of the piperidin-4-ylmethyl moiety of 2 led to a decrease in the binding affinity for the 5-HT4 receptor. Following conversion of the carbonyl group on the benzoyl part to a hydroxyl or sulfoxide group, the binding affinity for the 5-HT4 receptor was retained although the effect on defecation was reduced. Many of the 4-amino-5-chloro-2-methoxy-N-(piperidin-4-ylmethyl)benzamides that had a ether or sulfide moiety in the side-chain part at the 1-position of the piperidine exhibited high affinity for the 5-HT4 receptor.Among these, phenylthio 41c and benzylthio derivative 44 were selective 5-HT4 receptor agonists, and had a similar effect on defecation to compound 2. (c) 2005 Elsevier Ltd. All rights reserved.
Oki,M.; Mutai,K., Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 1969, vol. 25, p. 1941 - 1951
作者:Oki,M.、Mutai,K.
DOI:——
日期:——
v. Braun; Mueller, Chemische Berichte, 1906, vol. 39, p. 4112