JP3591245B2 - Polyenediol and method for producing the same - Google Patents
Polyenediol and method for producing the same Download PDFInfo
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- JP3591245B2 JP3591245B2 JP29231597A JP29231597A JP3591245B2 JP 3591245 B2 JP3591245 B2 JP 3591245B2 JP 29231597 A JP29231597 A JP 29231597A JP 29231597 A JP29231597 A JP 29231597A JP 3591245 B2 JP3591245 B2 JP 3591245B2
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C403/00—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone
- C07C403/22—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains substituted by sulfur atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C403/00—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone
- C07C403/06—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains substituted by singly-bound oxygen atoms
- C07C403/08—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains substituted by singly-bound oxygen atoms by hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/09—Geometrical isomers
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/16—Systems containing only non-condensed rings with a six-membered ring the ring being unsaturated
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Description
【0001】
【発明の属する技術分野】
本発明は、医薬の中間体、例えばレチノールの中間体として有用なポリエンジオールおよびその製造法に関する。
【0002】
【従来の技術および発明が解決しようとする課題】
本発明は、新規なポリエンジオールおよびその製造法を提供しようとするものである。
【0003】
【課題を解決するための手段】
本発明者らは、上記課題を解決するために鋭意検討した結果本発明に至った。
すなわち、本発明は、式(1)
で示されるポリエンジオールおよびその製造法を提供するものである。
【0004】
【発明の実施の形態】
以下、本発明について詳細に説明する。
式(1)で示されるポリエンジオールは、一般式(2)
(式中、Arは置換基を有していてもよいアリール基、R1およびR2は同一または相異なり、アシル基を示す。)
で示されるスルホン誘導体と塩基とを反応させることにより得ることができる。
【0005】
一般式(2)で示されるスルホン誘導体のR1、R2は、水素原子またはアシル基を示すが、アシル基としては具体的には例えばアセチル、ピバロイル、ベンゾイル、p−ニトロベンゾイルなどが挙げられる。
【0006】
一般式(2)で示されるスルホン誘導体のArは置換基を有していてもよいアリール基を示し、その置換基としては、C1からC5のアルキル基、C1からC5のアルコキシ基、ハロゲン原子、ニトロ基等が挙げられる。具体的には、例えば、フェニル、ナフチル、o−トリル,m−トリル,p−トリル、o−メトキシフェニル、m−メトキシフェニル、p−メトキシフェニル、o−クロロフェニル、m−クロロフェニル、p−クロロフェニル、o−ブロモフェニル、m−ブロモフェニル、p−ブロモフェニル、o−ヨードフェニル、m−ヨードフェニル、p−ヨードフェニル、o−フルオロフェニル、m−フルオロフェニル、p−フルオロフェニル、o−ニトロフェニル、m−ニトロフェニル、p−ニトロフェニル等が挙げられる。
【0007】
上記反応に用いられる塩基としては、例えばアルカリ金属の水酸化物、アルカリ土類金属の水酸化物、アルカリ金属の水素化物、アルカリ土類金属の水素化物、アルカリ金属のアルコキサイド、アルカリ土類金属のアルコキサイド等が挙げられ、具体的には、例えば、水酸化ナトリウム、水酸化カリウム、水素化ナトリウム、水素化カリウム、ナトリウムメトキサイド、カリウムメトキサイド、カリウムt−ブトキサイド等が挙げられる。
かかる塩基の使用量はスルホン誘導体(2)に対して、通常、1〜30モル倍程度、好ましくは、3〜25モル倍程度である。
【0008】
上記反応には、通常、有機溶媒が用いられ、かかる溶媒としては例えば、ジエチルエーテル、テトラヒドロフラン、アニソール等のエーテル系溶媒、n−ヘキサン、シクロヘキサン、n−ペンタン、トルエン、キシレン等の炭化水素系溶媒、クロロホルム、ジクロロメタン、ジクロロエタン、モノクロロベンゼン、o−ジクロロベンゼン等のハロゲン系溶媒、メタノール、エタノール、i−プロピルアルコール、t−ブチルアルコール等のアルコール系溶媒もしくはN,N−ジメチルホルムアミド、ジメチルスルホキシド、N,N−ジメチルアセトアミド、ヘキサメチルホスホリックトリアミド等の非プロトン性極性溶媒が挙げられる。
【0009】
反応温度は、通常、−78℃から使用する溶媒の沸点の範囲である。なお反応初期は低温の方が好ましい。また、反応時間は、反応で用いる塩基の種類ならびに反応温度によって異なるが、通常1時間から24時間程度の範囲で目的を達することができる。
反応後、通常の後処理操作をすることによりポリエンジオール(1)を得ることができる。さらに必要に応じて、シリカゲルクロマトグラフィー等により精製することができる。
なお、本発明の原料であるスルホン誘導体(2)はEまたはZ幾何異性体のいずれであっても、またその混合物であってもよい。また、ラセミ体でも光学活性体であってもよい。
【0010】
本発明の原料化合物であるスルホン誘導体(2)は以下のスルホン類(3)とハロヒドリン誘導体(4)を反応させることにより合成することができる。
(式中、Ar、R1およびR2は、前記と同じ意味を表わす。)
また、スルホン類(3)またはハロヒドリン誘導体(4)は、ゲラニオールより合成することができる。
【0011】
【発明の効果】
本発明のポリエンジオール(1)は、医薬、例えばレチノールの中間体として有用である。
【0012】
【実施例】
以下、実施例により、本発明をさらに詳細に説明するが、本発明はこれらにより限定されるものではない。
【0013】
(実施例1)
フラスコに1,5−ジアセトキシ−3,7−ジメチル−9−(2,6,6−トリメチルシクロヘキセン−1−イル)−9−(4−メチルフェニルスルホニル)−ノナ−2,6−ジエン(以下、化合物(c))0.20g(0.27mmol)とシクロヘキサン40mlを仕込み、攪拌下、カリウムメトキシド0.26g(3.70mmol)を添加した。40℃で6時間攪拌後、TLCにて原料が消失しているのを確認して、反応液に飽和塩化アンモニウム水溶液を注加し、エーテルで抽出した。有機層はあわせて飽和塩化ナトリウム水溶液で洗浄後、無水硫酸マグネシウムで脱水後、溶媒を留去することにより1,5−ジヒドロキシ−3,7−ジメチル−9−(2,6,6−トリメチルシクロヘキセン1−イル)−ノナ−2,6,8−トリエン(ポリエンジオール(1))を収率95%で得た。
1H−NMR δ(CDCl3)
1.00(6H , s) , 1.74(3H , s) , 1.86(3H , s) , 2.00(3H , s) ,4.15(2H , br) ,4.64(1H , m) , 5.40(1H , d, J=7Hz) , 5.99(2H , d, J=16Hz) , 6.11(2H , d, J=16Hz)
13C−NMR δ(CDCl3)
12.8, 16.4 , 19.3 , 21.6 , 28.8 , 32.9 , 34.1 , 39.5 , 47.7 , 59.0 , 66.2 ,126.9,127.1,129.0,132.1,135.8,135.9,137.0,137.5
【0014】
(参考例1)
酢酸ゲラニル40g(0.204mol)をヘキサンに溶解し、トリクロロイソシアヌル酸17.1g(0.071mol)を徐々に仕込み−10℃〜0℃で6時間保温した。反応後、過剰のトリクロロイソシアヌール酸および副生するイソシアヌル酸は濾過により系外に除去した。濾液は炭酸水素ナトリウム及び水で順次洗浄して、無水硫酸マグネシウムで脱水した後、溶媒を留去することにより粗製物を得た。
得られた粗製物は、シリカゲルカラムクロマトグラフィーで精製し、6−クロロ−3,7−ジメチル−オクタ−2,7−ジエン−1−アセテート(以下、化合物合物(f))を淡黄色オイルとして、85.5%で得た。
【0015】
(参考例2)
乾燥した4つ口フラスコに窒素下、微粉末の水酸化ナトリウム6.8g(0.17mol)、トリフェニルホスフィン2.2g(8.5mmol)、テトラn−ブチルアンモニウムクロライド1.4g(5.1mmol)、アリルパラジウムクロライドダイマー0.62g(1.7mmol),THF100mlを加えた。そこへ、攪拌下、化合物(f)40g(0.17mol)のTHF溶液150mlを室温で1時間かけて滴下した。
室温で3日間攪拌後、TLCにて原料の消失を確認して、反応混合物を水にあけ、エーテルで抽出した。有機層は飽和塩化ナトリウム水溶液で洗浄し、無水硫酸マグネシウムで脱水後、溶媒を留去することにより、粗製物を得た。得られた粗製物はシリカゲルクロマトグラフィーにて精製し、3,7−ジメチル−オクタ−2,5,7−トリエン−1−アセテート(以下、化合物(g))を65%の収率で得た。
1H−NMR δ(CDCl3)
1.70(3H,s) , 1.85(3H,s) , 2.08(3H,s)
2.81(2H,d,J=7Hz) , 4.58(2H,d,J=7Hz)
4.90(2H,s) ,5.37(1H,t,J=7Hz)
5.61(1H,td,J=16、7Hz) , 6.16(1H,d,J=15Hz)
【0016】
(参考例3)
化合物(g)20.1g(0.1mol)と酢酸100mlを仕込み、室温でN−ブロモスクシンイミド18.3g(0.1mol)をゆっくりと添加する。室温で10〜15分で反応マスは均一になり、2時間後、TLCにて原料の消失を確認後、反応混合物を水にあけ、トルエンで抽出した。有機層は無水硫酸マグネシウムで脱水後、溶媒を留去することにより、8−ブロモ−3,7−ジメチル−オクタ−2,6−ジエン−1,5−ジアセテート(以下、化合物(b))と8−ブロモ−3,7−ジメチル−オクタ−2,5−ジエン−1,7−ジアセテート(以下、化合物(h))の約1:1の混合物を95%の収率で得た。得られた混合物をシリカゲルクロマトグラフィーにて分離精製し、化合物(h)を淡黄色オイルとして収率29%で、化合物(i)を淡黄色オイルとして収率30%で単離し、混合物としても収率31%で得た。
1H−NMR δ (CDCl3)
化合物(b)
1.77(3H,s) , 1.82(3H,s),1.98((3H,s) , 2.02(3H,s),2.29(2H,ddd,J=35、8、6Hz) , 3.89(2H,s),4.55(2H,d,J=7Hz) , 5.37(1H,t,J=7Hz),5.48〜5.62(2H,m)
化合物(h)
1.65(3H,s) , 1.68(3H,s),2.05(3H,s) , 2.06(3H,s),2.78(2H,d,J=6Hz) , 3.75(2H,dd,J=26,11Hz),4.57(2H,d,J=7Hz) , 5.35(1H,t,J=7Hz),5.61〜5.77(2H,m)
【0017】
(参考例4)
β−シクロゲラニルp−トリルスルホン(以下、化合物(a))0.53g(1.8mmol)とTHF20mlを仕込み、溶解してから−60℃まで冷却した。同温度でn−ブチルリチウムのヘキサン溶液を1.13ml(1.8mmol)をゆっくりと滴下し、3時間保温した。その後、化合物(b)0.3g(0.9mmol)のTHF溶液5mlを1時間かけて滴下した。同温度で3時間攪拌後、TLCにて原料の一方が消失しているのを確認して、反応マスを飽和塩化アンモニウム水溶液にあけ、エーテルで抽出した。有機層は飽和塩化ナトリウム水溶液で洗浄して、無水硫酸マグネシウムで脱水した。溶媒を留去することにより、粗製物を得た。得られた粗製物はシリカゲルカラムクロマトグラフィーにて精製し、化合物(c)を淡黄色オイルとして収率74%で単離した。(Rf値 0.38 : n−ヘキサン/酢酸エチル=3/1)
1H−NMR δ(CDCl3)
0.76(6H,d, J=14Hz) , 0.95(6H,d, J=14Hz) , 1.39(3H,s) , 1.70(3H,s)
2.00(3H,s) , 2.01(3H,s) , 2.03(3H,s) , 2.44(3H ,s) , 2.66−2.95(2H,m)
3.82−3.86(1H,m) , 4.53(2H,d, J=7Hz)
5.10(1H,d, J=9Hz) , 5.20(1H,d, J=9Hz)
5.34(1H,br) , 5.56(1H,br) , 7.33(2H,d, J=8Hz) , 7.76(2H,d , J=8Hz)
13C−NMR δ(CDCl3)
15.1, 16.0 , 16,1 , 16.6 , 18.8 , 20.8 , 20.9 , 21.4 , 28.2 , 29.0 , 35.5 , 40.5, 44.6 , 60.8 , 65.3 . 65.5 , 65.7 , 68.3, 68.5 , 68.8 , 121.9 ,127.1 , 128.3 , 129.4 , 130.5 , 130.6 , 136.2 , 137.1 , 137.6 , 137.7 , 138.4 , 144.0 , 169.8 , 170.0 , 170.7
【0018】
以下に実施例および参考例の化合物の構造式を記す。
但し、Tsは、p−トリルスルホニル基を示す。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to polyenediols useful as pharmaceutical intermediates, for example, retinol intermediates, and a process for producing the same.
[0002]
2. Description of the Related Art
The present invention seeks to provide a novel polyenediol and a method for producing the same.
[0003]
[Means for Solving the Problems]
The present inventors have conducted intensive studies in order to solve the above problems, and as a result, have reached the present invention.
That is, the present invention relates to formula (1)
And a method for producing the same.
[0004]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail.
The polyene diol represented by the formula (1) has a general formula (2)
(In the formula, Ar represents an aryl group which may have a substituent, R 1 and R 2 are the same or different, and represent an acyl group.)
By reacting a sulfone derivative of the formula with a base.
[0005]
R 1 and R 2 of the sulfone derivative represented by the general formula (2) represent a hydrogen atom or an acyl group, and specific examples of the acyl group include acetyl, pivaloyl, benzoyl, and p-nitrobenzoyl. .
[0006]
Ar of the sulfone derivative represented by the general formula (2) represents an aryl group which may have a substituent, and the substituent includes a C1 to C5 alkyl group, a C1 to C5 alkoxy group, a halogen atom, And a nitro group. Specifically, for example, phenyl, naphthyl, o-tolyl, m-tolyl, p-tolyl, o-methoxyphenyl, m-methoxyphenyl, p-methoxyphenyl, o-chlorophenyl, m-chlorophenyl, p-chlorophenyl, o-bromophenyl, m-bromophenyl, p-bromophenyl, o-iodophenyl, m-iodophenyl, p-iodophenyl, o-fluorophenyl, m-fluorophenyl, p-fluorophenyl, o-nitrophenyl, m-nitrophenyl, p-nitrophenyl and the like.
[0007]
Examples of the base used in the above reaction include alkali metal hydroxide, alkaline earth metal hydroxide, alkali metal hydride, alkaline earth metal hydride, alkali metal alkoxide, and alkaline earth metal. Examples thereof include alkoxides, and specific examples thereof include sodium hydroxide, potassium hydroxide, sodium hydride, potassium hydride, sodium methoxide, potassium methoxide, and potassium t-butoxide.
The amount of the base to be used is generally about 1 to 30 mol, preferably about 3 to 25 mol, per mol of the sulfone derivative (2).
[0008]
In the above reaction, an organic solvent is generally used. Examples of such a solvent include ether solvents such as diethyl ether, tetrahydrofuran and anisole, and hydrocarbon solvents such as n-hexane, cyclohexane, n-pentane, toluene and xylene. , Chloroform, dichloromethane, dichloroethane, monochlorobenzene, o-dichlorobenzene, and other halogen-based solvents, methanol, ethanol, i-propyl alcohol, t-butyl alcohol, and other alcohol-based solvents, or N, N-dimethylformamide, dimethylsulfoxide, N , N-dimethylacetamide, hexamethylphosphoric triamide and the like.
[0009]
The reaction temperature is usually in the range of -78 ° C to the boiling point of the solvent used. In addition, a low temperature is preferable at the beginning of the reaction. The reaction time varies depending on the type of the base used in the reaction and the reaction temperature, but the purpose can usually be achieved in the range of about 1 to 24 hours.
After the reaction, polyene diol (1) can be obtained by performing a usual post-treatment operation. Further, if necessary, it can be purified by silica gel chromatography or the like.
In addition, the sulfone derivative (2) which is a raw material of the present invention may be either an E or Z geometric isomer or a mixture thereof. Further, it may be racemic or optically active.
[0010]
The sulfone derivative (2) as a raw material compound of the present invention can be synthesized by reacting the following sulfones (3) with a halohydrin derivative (4).
(Wherein, Ar, R 1 and R 2 represent the same meaning as described above.)
Further, the sulfones (3) or the halohydrin derivative (4) can be synthesized from geraniol.
[0011]
【The invention's effect】
The polyenediol (1) of the present invention is useful as an intermediate for a medicine, for example, retinol.
[0012]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.
[0013]
(Example 1)
In a flask, 1,5-diacetoxy-3,7-dimethyl-9- (2,6,6-trimethylcyclohexen-1-yl) -9- (4-methylphenylsulfonyl) -nona-2,6-diene (hereinafter, referred to as "a"). 0.20 g (0.27 mmol) of compound (c)) and 40 ml of cyclohexane were added, and 0.26 g (3.70 mmol) of potassium methoxide was added with stirring. After stirring at 40 ° C. for 6 hours, it was confirmed by TLC that the raw materials had disappeared, a saturated aqueous ammonium chloride solution was poured into the reaction solution, and the mixture was extracted with ether. After washing with the organic layer is combined with a saturated aqueous sodium chloride solution, dehydrated over anhydrous magnesium sulfate, Ri by the distilling off the solvent 1, 5-dihydroxy-3,7-dimethyl-9- (2,6,6 Trimethylcyclohexen 1-yl) -nona-2,6,8-triene (polyenediol (1)) was obtained at a yield of 95%.
1 H-NMR δ (CDCl 3 )
1.00 (6H, s), 1.74 (3H, s), 1.86 (3H, s), 2.00 (3H, s), 4.15 (2H, br), 4.64 (1H) , M), 5.40 (1H, d, J = 7 Hz), 5.99 (2H, d, J = 16 Hz), 6.11 (2H, d, J = 16 Hz)
13 C-NMR δ (CDCl 3 )
12.8, 16.4, 19.3, 21.6, 28.8, 32.9, 34.1, 39.5, 47.7, 59.0, 66.2, 126.9, 127. 1, 129.0, 132.1, 135.8, 135.9, 137.0, 137.5
[0014]
(Reference Example 1)
40 g (0.204 mol) of geranyl acetate was dissolved in hexane, 17.1 g (0.071 mol) of trichloroisocyanuric acid was gradually added, and the mixture was kept at -10 ° C to 0 ° C for 6 hours. After the reaction, excess trichloroisocyanuric acid and by-produced isocyanuric acid were removed from the system by filtration. The filtrate was washed successively with sodium hydrogen carbonate and water, dried over anhydrous magnesium sulfate, and then the solvent was distilled off to obtain a crude product.
The obtained crude product was purified by silica gel column chromatography, and 6-chloro-3,7-dimethyl-octa-2,7-diene-1-acetate (hereinafter, compound compound (f)) was converted into a pale yellow oil. Was obtained at 85.5%.
[0015]
(Reference Example 2)
Under a nitrogen atmosphere, 6.8 g (0.17 mol) of fine powder of sodium hydroxide, 2.2 g (8.5 mmol) of triphenylphosphine, and 1.4 g (5.1 mmol) of tetra-n-butylammonium chloride were placed in a dry four-necked flask. ), 0.62 g (1.7 mmol) of allyl palladium chloride dimer and 100 ml of THF were added. Under stirring, 150 ml of a THF solution of 40 g (0.17 mol) of the compound (f) was added dropwise at room temperature over 1 hour.
After stirring at room temperature for 3 days, the disappearance of the starting materials was confirmed by TLC, and the reaction mixture was poured into water and extracted with ether. The organic layer was washed with a saturated aqueous solution of sodium chloride, dried over anhydrous magnesium sulfate, and then the solvent was distilled off to obtain a crude product. The obtained crude product was purified by silica gel chromatography to obtain 3,7-dimethyl-octa-2,5,7-triene-1-acetate (hereinafter, compound (g)) in a yield of 65%. .
1 H-NMR δ (CDCl 3 )
1.70 (3H, s), 1.85 (3H, s), 2.08 (3H, s)
2.81 (2H, d, J = 7 Hz), 4.58 (2H, d, J = 7 Hz)
4.90 (2H, s), 5.37 (1H, t, J = 7 Hz)
5.61 (1H, td, J = 16, 7 Hz), 6.16 (1H, d, J = 15 Hz)
[0016]
(Reference Example 3)
20.1 g (0.1 mol) of the compound (g) and 100 ml of acetic acid are charged, and 18.3 g (0.1 mol) of N-bromosuccinimide is slowly added at room temperature. The reaction mass became uniform in 10 to 15 minutes at room temperature, and after 2 hours, the disappearance of the raw materials was confirmed by TLC. Then, the reaction mixture was poured into water and extracted with toluene. The organic layer is dehydrated with anhydrous magnesium sulfate and then the solvent is distilled off to obtain 8-bromo-3,7-dimethyl-octa-2,6-diene-1,5-diacetate (hereinafter, compound (b)). And a mixture of 8-bromo-3,7-dimethyl-octa-2,5-diene-1,7-diacetate (hereinafter, compound (h)) at a ratio of about 1: 1 was obtained in a yield of 95%. The obtained mixture was separated and purified by silica gel chromatography, and the compound (h) was isolated as a pale yellow oil at a yield of 29%, and the compound (i) was isolated as a pale yellow oil at a yield of 30%. Obtained at a rate of 31%.
1 H-NMR δ (CDCl 3 )
Compound (b)
1.77 (3H, s), 1.82 (3H, s), 1.98 ((3H, s), 2.02 (3H, s), 2.29 (2H, ddd, J = 35, 8) , 6 Hz), 3.89 (2H, s), 4.55 (2H, d, J = 7 Hz), 5.37 (1H, t, J = 7 Hz), 5.48 to 5.62 (2H, m )
Compound (h)
1.65 (3H, s), 1.68 (3H, s), 2.05 (3H, s), 2.06 (3H, s), 2.78 (2H, d, J = 6 Hz), 3 .75 (2H, dd, J = 26, 11 Hz), 4.57 (2H, d, J = 7 Hz), 5.35 (1H, t, J = 7 Hz), 5.61 to 5.77 (2H, m)
[0017]
(Reference Example 4)
0.53 g (1.8 mmol) of β-cyclogeranyl p-tolylsulfone (hereinafter, compound (a)) and 20 ml of THF were charged, dissolved, and cooled to −60 ° C. At the same temperature, 1.13 ml (1.8 mmol) of a hexane solution of n-butyllithium was slowly added dropwise, and the mixture was kept warm for 3 hours. Thereafter, 5 ml of a THF solution of 0.3 g (0.9 mmol) of the compound (b) was added dropwise over 1 hour. After stirring at the same temperature for 3 hours, TLC confirmed that one of the raw materials had disappeared, and the reaction mass was poured into a saturated aqueous ammonium chloride solution and extracted with ether. The organic layer was washed with a saturated aqueous solution of sodium chloride and dried over anhydrous magnesium sulfate. The solvent was distilled off to obtain a crude product. The obtained crude product was purified by silica gel column chromatography, and the compound (c) was isolated as a pale yellow oil in a yield of 74%. (Rf value 0.38: n-hexane / ethyl acetate = 3/1)
1 H-NMR δ (CDCl 3 )
0.76 (6H, d, J = 14 Hz), 0.95 (6H, d, J = 14 Hz), 1.39 (3H, s), 1.70 (3H, s)
2.00 (3H, s), 2.01 (3H, s), 2.03 (3H, s), 2.44 (3H, s), 2.66-2.95 (2H, m)
3.82-3.86 (1H, m), 4.53 (2H, d, J = 7 Hz)
5.10 (1H, d, J = 9 Hz), 5.20 (1H, d, J = 9 Hz)
5.34 (1H, br), 5.56 (1H, br), 7.33 (2H, d, J = 8 Hz), 7.76 (2H, d, J = 8 Hz)
13 C-NMR δ (CDCl 3 )
15.1, 16.0, 16, 1, 16.6, 18.8, 20.8, 20.9, 21.4, 28.2, 29.0, 35.5, 40.5, 44. 6, 60.8, 65.3. 65.5, 65.7, 68.3, 68.5, 68.8, 121.9, 127.1, 128.3, 129.4, 130.5, 130.6, 136.2, 137. 1, 137.6, 137.7, 138.4, 144.0, 169.8, 170.0, 170.7
[0018]
The structural formulas of the compounds of Examples and Reference Examples are described below.
Here, Ts represents a p-tolylsulfonyl group.
Claims (4)
で示されるポリエンジオール。Equation (1)
A polyene diol represented by the formula:
(式中、Arは置換基を有していてもよいアリール基、R1およびR2は同一または相異なり、水素原子またはアシル基を示す。)
で示されるスルホン誘導体と塩基とを反応させることを特徴とする前記一般式(1)で示されるポリエンジオールの製造法。General formula (2)
(In the formula, Ar represents an aryl group which may have a substituent, R 1 and R 2 are the same or different, and represent a hydrogen atom or an acyl group.)
A method for producing a polyenediol represented by the general formula (1), wherein the sulfone derivative represented by the formula (1) is reacted with a base.
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