中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4-羟基-(4S)-2-环戊烯-1-酮 | (S)-4-hydroxycyclopent-2-en-1-one | 59995-49-2 | C5H6O2 | 98.1014 |
2-环戊烯酮 | cyclopent-2-enone | 930-30-3 | C5H6O | 82.102 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4-羟基-(4S)-2-环戊烯-1-酮 | (S)-4-hydroxycyclopent-2-en-1-one | 59995-49-2 | C5H6O2 | 98.1014 |
(4R)-(+)-羟基-2-环戊酮 | (R)-(+)-4-hydroxy-2-cyclopentenone | 59995-47-0 | C5H6O2 | 98.1014 |
4-甲氧基-2-环戊烯-1-酮 | 4-methoxycyclopent-2-enone | 61322-97-2 | C6H8O2 | 112.128 |
2-环戊烯酮 | cyclopent-2-enone | 930-30-3 | C5H6O | 82.102 |
The 15-thia-15-deoxy analogue of prostaglandin E1 methyl ester has been prepared by the zirconocene chloride mediated conjugate addition of an n-pentyl ethynyl sulfide derived anion to an appropriately substituted cyclopentenone. Similar methodology has also been used to prepare other 3-(3′-thia-1′-octenyl)-cyclopentanones.
通过锆二茂钠氯化物介导的共轭加成反应,将n-戊基乙炔硫醚衍生的负离子加到适当取代的环戊酮上,制备了前列腺素E1甲酯的15-硫-15-去氧类似物。类似的方法也被用来制备其他3-(3′-硫-1′-辛烯基)-环戊酮。
A series of racemic substituted cyclopentanones, with alkyl groups corresponding to the upper prostanoid side chain and (or) the lower prostanoid side chain without the C-15 alcohol, has been synthesized. Using a steroid template for the prostanoid molecule as a basis for selection, fungi capable of hydroxylating steroids have been used to biotransform the prostanoid substrates. The predominant products were hydroxylated at the prostanoid C-18 and C-19 positions. The hydroxylations were enantioselective, with excesses in the range 10–60%, and in most cases the predominant configuration corresponded to that of the natural prostanoids. The stereochemistry of the C-19 hydroxyl group was found to be R by degradation of products to methyl 6-acetoxyheptanoate and comparison of that material with a resolved sample, obtained via crystallization of the brucine salt of ethyl 6-phthaloxyheptanoate. Hydroxylation at C-18 gave the S configuration of alcohol. Hydroxylation at prostanoid C-15 was observed, but in all cases this was accompanied by other reactions. Hydroxylation of Rhizopusarrhizus has been used in a preparation of (−)-15-deoxy-19-(R)-hydroxy-PGE1 and (−)-15-deoxy-18-(S)-hydroxy-PGE1. Keywords: biotransformation, hydroxylation, prostaglandins, prostanoids.