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| 化学名: | リトドリン | | 英語化学名: | RITODRINE | | 别名: | 4-hydroxy-alpha-(1-((2-(4-hydroxyphenyl)ethyl)amino)ethyl)-benzenemethano(;4-hydroxy-alpha-(1-((2-(4-hydroxyphenyl)ethyl)amino)ethyl)benzenemethanol(r*;erythro-p-hydroxy-alpha-(1-((p-hydroxyphenethyl)amino)ethyl)benzylalcohol;RITODRINE;Benzenemethanol, 4-hydroxy-a-[(1R)-1-[[2-(4-hydroxyphenyl)ethyl]amino]ethyl]-, (aS)-rel- (9CI);Benzenemethanol, 4-hydroxy-a-[1-[[2-(4-hydroxyphenyl)ethyl]amino]ethyl]-, (R*,S*)-;Benzyl alcohol, p-hydroxy-a-[1-[(p-hydroxyphenethyl)amino]ethyl]-, erythro- (8CI);(1R,2S)-1-(4-Hydroxyphenyl)-2-[(4-hydroxyphenethyl)amino]-1-propanol | | CAS番号: | 26652-09-5 | | 分子式: | C17H21NO3 | | 分子量: | 287.35 | | EINECS: | 247-879-9 | | カテゴリ情報: | | | Mol File: | 26652-09-5.mol |  |
| 融点 | 88-90 °C | | 沸点 | 512.3±45.0 °C(Predicted) | | 比重(密度) | 1.213±0.06 g/cm3(Predicted) | | 酸解離定数(Pka) | pKa 9.0 (Uncertain) |
| | リトドリン Usage And Synthesis |
| 効能 | 子宮収縮抑制薬, β2アドレナリン受容体作動薬 | | 説明 | Ritodrine, 4-hydroxy-α-[1-[(4′-hydroxyphenethyl)amino]ethyl]benzylic alcohol
(11.1.19), differs slightly from epinephrine, and in the given example only one hydroxyl
group has been added to the aromatic ring of the phenylethylamino region of classic sympathomimetics. The second major difference between the examined series is the replacement of
the traditionally terminal iso-propyl or tert-butylamine region with a p-hydroxyphenylethylamine. Finally, the third difference is the presence of a methyl group at the α-atom of the
phenylethylamine region of sympathomimetics, which makes it similar to isoetharine. | | 使用 | Relaxant (smooth muscle). | | 使用 | Ritodrine is a selective β2-adrenoreceptor stimulant, predominantly of the urino-genital
system. It is used as a tocolytic agent for problems associated with premature miscarriages, and only in specialized medical facilities. | | 定義 | ChEBI: (1S,2R)-ritodrine is a 4-[2-[[1-hydroxy-1-(4-hydroxyphenyl)propan-2-yl]amino]ethyl]phenol that has (1S,2R)-configuration. It is an enantiomer of a (1R,2S)-ritodrine. | | 一般的な説明 | Ritodrine is a selective β2-agonist that wasdeveloped specifically for use as a uterine relaxant. Its uterineinhibitory effects are more sustained than its effects onthe cardiovascular system, which are minimal comparedwith those caused by nonselective β-agonists. The cardiovasculareffects usually associated with its administrationare mild tachycardia and slight diastolic pressure decrease.Usually, it is administered initially by intravenous infusionto stop premature labor and subsequently it may be givenorally. | | 臨床応用 | Ritodrine is a selective β2-agonist that is used exclusively for relaxing uterine muscle and inhibiting the contractions of premature labor.
Terbutaline, in addition to its use as a bronchodilator, also has been used for halting the contractions of premature labor. | | 合成 | Ritodrine is synthesized from 4-benzyloxypropiophenone, which undergoes bromination into
4-benzyloxy-|á-bromopropiophenone (11.1.17). This is reacted with 2-(4-benzyloxyphenyl)ethylamine, forming an intermediate product (11.1.18), which undergoes
further debenzylation by hydrogen using a palladium catalyst, giving ritodrine (11.1.19)
[24,25]. 
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