JPH07309891A - Production of steroid derivative - Google Patents

Production of steroid derivative

Info

Publication number
JPH07309891A
JPH07309891A JP6102529A JP10252994A JPH07309891A JP H07309891 A JPH07309891 A JP H07309891A JP 6102529 A JP6102529 A JP 6102529A JP 10252994 A JP10252994 A JP 10252994A JP H07309891 A JPH07309891 A JP H07309891A
Authority
JP
Japan
Prior art keywords
formula
compound
group
diene
protecting group
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6102529A
Other languages
Japanese (ja)
Inventor
Yoji Tachibana
陽二 橘
Shinji Yokoyama
信二 横山
Takeshi Tejima
剛 手島
Masahiro Tsuji
政弘 辻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nisshin Seifun Group Inc
Original Assignee
Nisshin Seifun Group Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nisshin Seifun Group Inc filed Critical Nisshin Seifun Group Inc
Priority to JP6102529A priority Critical patent/JPH07309891A/en
Publication of JPH07309891A publication Critical patent/JPH07309891A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Landscapes

  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Steroid Compounds (AREA)

Abstract

PURPOSE:To efficiently obtain in high yield a cholestadienediol useful as e.g. an intermediate for synthesizing 1alpha,25-dihydroxyvitamin D3, by reaction under specified conditions of a compound prepared by reaction between each specific halide and sulfonic compound. CONSTITUTION:A halide of formula I (X is Br or I; R is a base-resistant OH- protecting group) is first reacted with a sulfonic compound of formula II (R' is the same as R) in the presence of a base to produce a compound of formula III, which is then freed from the protecting group followed by the sulfonyl group into a diol compound of formula IV, which is then freed from the 7-diene- protecting group to obtain the objective cholesta-5,7-diene-3beta,25-diol of formula V.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、式(I)The present invention is of the formula (I)

【化7】 で示されるコレスタ−5,7−ジエン−3β,25−ジオ
ールの製造方法、および式(I)の化合物を製造する過
程で得られる新規な中間体に関する。上記式(I)で示
されるコレスタ−5,7−ジエン−3β,25−ジオール
は、強力なビタミンD3活性を有する1α,25−ジヒド
ロキシビタミンD3を製造するための中間体として有用
なステロイド誘導体である。
[Chemical 7] And a novel intermediate obtained in the process of producing the compound of formula (I). The cholesta-5,7-diene-3β, 25-diol represented by the above formula (I) is a steroid useful as an intermediate for producing 1α, 25-dihydroxyvitamin D 3 having strong vitamin D 3 activity. It is a derivative.

【0002】[0002]

【従来の技術およびその問題点】ビタミンD3は、生理
活性を発現する前に、まず、肝臓において25位の炭素
がヒドロキシル化されて25−ヒドロキシビタミンD3
になり、次いで腎臓において1α位の炭素がヒドロキシ
ル化されて1α,25−ジヒドロキシビタミンD3に代謝
されることが知られている。1α,25−ジヒドロキシ
ビタミンD3は、小腸、腎臓ならびに骨などの標的器官
に運ばれて、例えば、小腸では、粘膜上皮細胞に作用し
てカルシウム、リン酸の吸収を促し、腎臓では、尿細管
上皮細胞に作用してカルシウム、リン酸の再吸収を促進
し、そして、骨では、骨塩の動員を促進する作用を有す
る、活性型ビタミンD3の中でも、最も生理活性が高
く、例えば、オステオボローシス(骨粗鬆症)等の治療
に広く用いられている。
2. Description of the Related Art Vitamin D 3 is a 25-hydroxyvitamin D 3 which is first hydroxylated at the 25th carbon in the liver before the physiological activity is exhibited.
It is known that the carbon at the 1α position is then hydroxylated in the kidney to be metabolized to 1α, 25-dihydroxyvitamin D 3 . 1α, 25-dihydroxyvitamin D 3 is transported to target organs such as the small intestine, kidney and bone. It has the highest physiological activity among active vitamin D 3 having an action on epithelial cells to promote reabsorption of calcium and phosphate, and has an action to promote mobilization of bone mineral in bone. It is widely used for the treatment of borosis (osteoporosis).

【0003】1α,25−ジヒドロキシビタミンD3は上
記コレスタ−5,7−ジエン−3β,25−ジオール
(I)の紫外線照射及び熱異性化によって生成する25
−ヒドロキシビタミンD3の選択的な1α位水酸化反応
によって効率良く製造されており(J. Org. Chem., 45,
3253 (1980) 参照)、従って上記化合物(I)を効率
よく製造する方法は、工業的に優れた1α,25−ジヒ
ドロキシビタミンD3の製造法を提供するものであると
いうことができる。
1α, 25-dihydroxyvitamin D 3 is produced by UV irradiation and thermal isomerization of cholesta-5,7-diene-3β, 25-diol (I).
-Efficiently produced by selective 1α-hydroxylation reaction of hydroxyvitamin D 3 (J. Org. Chem., 45 ,
3253 (1980)), and therefore, the method for efficiently producing the compound (I) provides an industrially excellent method for producing 1α, 25-dihydroxyvitamin D 3 .

【0004】従来コレスタ−5,7−ジエン−3β、2
5−ジオールの製造法としては、コレン酸を用いる方法
(Steroids, 13, 567 (1969))やデスモステロールを
使用する方法(PCT. Int. App1., WO 9321204; CA, 12
0, 107479m (1994))等があるが、いずれも出発原料が
入手が困難でかつ高価であり、これらの方法は工業的方
法としては優れた方法とは言えない。
Conventional cholesterol-5,7-diene-3β, 2
As a method for producing 5-diol, a method using cholenic acid (Steroids, 13 , 567 (1969)) or a method using desmosterol (PCT. Int. App1., WO 9321204; CA, 12)
0 , 107479m (1994)), etc., but starting materials are difficult to obtain and expensive, and these methods cannot be said to be excellent industrial methods.

【0005】また製造法自体として25−ヒドロキシビ
タミンD3のみならず、その誘導体合成にも適用できる
汎用性を持った製造法であることがより望ましい。さら
にまた、式(I)で示される化合物の5,7−ジエン部
は酸に敏感であるので、5,7−ジエン部は各反応工程
中保護しておいて、できるだけ式(I)の化合物を得る
直前で除去するのが望ましい。
Further, it is more desirable that the production method itself is a versatile production method applicable not only to 25-hydroxyvitamin D 3 but also to its derivative synthesis. Furthermore, since the 5,7-diene moiety of the compound represented by formula (I) is sensitive to acid, the 5,7-diene moiety should be protected during each reaction step to prevent the compound of formula (I) from reacting as much as possible. It is desirable to remove it immediately before obtaining.

【0006】そこで本発明者らは、上記問題点を回避
し、式(I)で示されるコレスタ−5,7−ジエン−3
β,25−ジオールを効率よく得る新規な製造法を提供
すべく鋭意研究を重ねた結果、式(II)で示されるハロ
ゲン化物を出発原料とし新規な中間体を経由する製造法
が、上記問題点を解決しうることを見出して本発明を完
成したのである。
Therefore, the inventors of the present invention have avoided the above-mentioned problems and have been able to solve the problems described above by using cholesta-5,7-diene-3 represented by the formula (I).
As a result of intensive studies to provide a novel production method for efficiently obtaining β, 25-diol, the above-mentioned problem is caused by the production method using a halide represented by the formula (II) as a starting material and a novel intermediate. The inventors have completed the present invention by finding that the points can be solved.

【0007】[0007]

【問題点を解決するための手段】すなわち、本発明は次
That is, the present invention uses the following formula

【化8】 (式中、Xは臭素又は沃素原子を表わし、Rは耐塩基性
の水酸基の保護基を表わす)で示されるハロゲン化物
と、次式
[Chemical 8] (Wherein, X represents a bromine atom or an iodine atom, and R represents a base-resistant hydroxyl-protecting group), and a compound represented by the following formula:

【化9】 (式中、R′は耐塩基性の水酸基の保護基を表わす)で
示されるスルホン化合物とを塩基の存在下に反応させ
て、次式
[Chemical 9] (Wherein R'represents a base-resistant hydroxyl-protecting group) and is reacted with a sulfone compound in the presence of a base to give the following formula:

【化10】 (式中、R、R′は上記定義の通りである)で示される
化合物とし、次いで式(IV)の保護基を除去して、次式
[Chemical 10] (Wherein R and R ′ are as defined above), and then the protecting group of formula (IV) is removed to give a compound of the following formula

【0008】[0008]

【化11】 で示される化合物とし、次いで式(V)の化合物のフェ
ニルスルホニル基を除去して、次式
[Chemical 11] And then removing the phenylsulfonyl group of the compound of formula (V) to give a compound of the following formula

【化12】 で示されるジオール化合物とし、次いで式(VI)の化合
物の5,7−ジエンの保護基を除去して、次式
[Chemical 12] A diol compound of formula (VI), and then removing the protecting group of the 5,7-diene of the compound of formula (VI)

【化13】 で示されるコレスタ−5,7−ジエン−3β,25−ジオ
ールを製造する方法に関する。
[Chemical 13] And a method for producing cholesta-5,7-diene-3β, 25-diol represented by

【0009】上記化合物中、式(II)、式(III)、式
(IV)で示される化合物の水酸基の保護基としては、塩
基性条件に耐えうる保護基であればよく、テトラヒドロ
ピラニル基、メトキシメチル基、2−メトキシエトキシ
メチル基、t−ブチルジメチルシリル基、トリメチルシ
リル基などが挙げられるが、好ましくはテトラヒドロピ
ラニル基やt−ブチルジメチルシリル基が用いられる。
In the above compound, the protective group for the hydroxyl group of the compound represented by the formula (II), the formula (III) or the formula (IV) may be any protective group that can withstand the basic condition, and may be a tetrahydropyranyl group. , A methoxymethyl group, a 2-methoxyethoxymethyl group, a t-butyldimethylsilyl group, a trimethylsilyl group and the like, but a tetrahydropyranyl group and a t-butyldimethylsilyl group are preferably used.

【0010】本発明の出発原料である式(II)で示され
るハロゲン化物はエルゴステロール(VII)からスキー
ム1に示される方法で製造することができる(特開平5
−163238及び320127、特開平3−1183
91参照)。
The halogenated compound represented by the formula (II), which is the starting material of the present invention, can be produced from ergosterol (VII) by the method shown in Scheme 1 (Japanese Patent Application Laid-Open No. 5 (1999) -58242).
-163238 and 320127, JP-A-3-1183
91).

【化14】 (式中Rは耐塩基性の水酸基の保護基、Mはナトリウ
ム、又リチウム原子を示す)。
[Chemical 14] (In the formula, R is a base-resistant hydroxyl-protecting group, M is sodium, or a lithium atom).

【0011】また、本発明において用いられるスルホン
化合物(III)は下記の合成スキーム2によって合成す
ることができる(Bull. Chem. Soc., 62, 2599 (198
9);63,2233 (1990) 参照)。
The sulfone compound (III) used in the present invention can be synthesized by the following synthetic scheme 2 (Bull. Chem. Soc., 62 , 2599 (198).
9); 63 , 2233 (1990)).

【化15】 (式中R′は耐塩基性の水酸基の保護基を示す)。[Chemical 15] (In the formula, R'represents a base-resistant hydroxyl-protecting group).

【0012】上記の式(III)で示される化合物の水酸
基の保護基としては、塩基性条件に耐えうる保護基であ
ればよく、テトラヒドロピラニル基、メトキシメチル
基、2−メトキシエトキシメチル基、t−ブチルジメチ
ルシリル基、トリメチルシリル基などが挙げられるが、
好ましくはテトラヒドロピラニル基が用いられる。
The protective group for the hydroxyl group of the compound represented by the above formula (III) may be a protective group that can withstand basic conditions, and may be a tetrahydropyranyl group, a methoxymethyl group, a 2-methoxyethoxymethyl group, Examples thereof include t-butyldimethylsilyl group and trimethylsilyl group.
A tetrahydropyranyl group is preferably used.

【0013】次に本発明についてさらに詳しく説明す
る。式(II)で示されるハロゲン化物と、式(III)で
示されるスルホン化合物とを反応させて、式(IV)で示
される化合物を得る工程は次のようにして行なわれる。
まず、テトラヒドロフラン中において、−78°〜0℃
の温度範囲で、所望によりヘキサメチルホスホリックト
リアミド(HMPA)又は1,3−ジメチル−2−イミ
ダゾリジノンの存在下に、n−ブチルリチウムやリチウ
ムジイソプロピルアミド(LDA)などの強有機塩基に
てスルホン化合物(III)のアニオンを形成させ、次い
で−30°〜室温の温度範囲でハロゲン化物(II)を加
えて行なわれる。使用されるスルホン化合物(III)の
量はハロゲン化物(II)に対して1〜10倍モル、好ま
しくは1.5〜5倍モルの範囲である。また使用される
有機塩基の量はスルホン化合物(III)に対して1〜3
0倍モル、好ましくは1〜10倍モルの範囲である。
Next, the present invention will be described in more detail. The step of reacting the halide represented by the formula (II) with the sulfone compound represented by the formula (III) to obtain the compound represented by the formula (IV) is performed as follows.
First, in tetrahydrofuran, at -78 ° to 0 ° C
In the presence of hexamethylphosphoric triamide (HMPA) or 1,3-dimethyl-2-imidazolidinone, in the presence of a strong organic base such as n-butyllithium or lithium diisopropylamide (LDA). To form the anion of the sulfone compound (III), and then the halide (II) is added in the temperature range of -30 ° to room temperature. The amount of the sulfone compound (III) used is in the range of 1 to 10 times, preferably 1.5 to 5 times the mol of the halide (II). The amount of the organic base used is 1 to 3 with respect to the sulfone compound (III).
The molar ratio is 0 times, preferably 1 to 10 times.

【0014】式(IV)で示される化合物より、3β位、
25位の水酸基の保護基を除去して、式(V)で示され
る5,7−ジエン部の保護されたジオールとする。先に
例として挙げた保護基はいずれも酸性条件下で除去でき
る。テトラヒドロピラニル基やシリル基の場合、その除
去は通常の酸性条件による方法で行なわれる。すなわ
ち、酢酸−水、酢酸−水−テトラヒドロフランのような
酸性条件下で、またはメタノールもしくはエタノール中
においてp−トルエンスルホン酸、p−トルエンスルホ
ン酸ピリジニウム、アンバーリスト15などで処理する
ことによって行なわれる。好ましくは、エタノール中
0.1〜1.0倍モルのp−トルエンスルホン酸を用い
て、0°〜80℃の温度範囲で行なわれる。
From the compound represented by the formula (IV), 3β-position,
The protective group of the hydroxyl group at the 25-position is removed to obtain a protected diol of the 5,7-diene portion represented by the formula (V). Any of the protecting groups mentioned above can be removed under acidic conditions. In the case of a tetrahydropyranyl group or a silyl group, the removal thereof is performed by a method under ordinary acidic conditions. That is, it is carried out under acidic conditions such as acetic acid-water, acetic acid-water-tetrahydrofuran, or by treating with p-toluenesulfonic acid, pyridinium p-toluenesulfonate, Amberlyst 15 or the like in methanol or ethanol. Preferably, it is carried out in a temperature range of 0 ° to 80 ° C using 0.1 to 1.0 times mol of p-toluenesulfonic acid in ethanol.

【0015】式(V)で示される化合物は、テトラヒド
ロフラン−メタノール混合溶媒中、あるいはリン酸水素
二ナトリウム(Na2HPO4)で飽和したメタノール
中、過剰のナトリウムアマルガムにて処理し、スルホニ
ル基を除去することにより式(VI)で示される化合物と
する。温度範囲は−40°〜室温の範囲で行なわれる。
The compound represented by the formula (V) is treated with an excess amount of sodium amalgam in a mixed solvent of tetrahydrofuran-methanol or in methanol saturated with disodium hydrogen phosphate (Na 2 HPO 4 ) to give a sulfonyl group. The compound of formula (VI) is obtained by removing. The temperature range is -40 ° to room temperature.

【0016】式(VI)で示される化合物は、5,7−ジ
エンの保護基を除去して、式(I)で示されるコレスタ
−5,7−ジエン−3β,25−ジオールとする。この反
応は通常の方法によって行なわれる。すなわち、式(V
I)で示される化合物に対して、過剰量の水素化リチウ
ムアルミニウム(LiAlH4)やビトライドを用いて
テトラヒドロフラン中において室温からその沸点温度で
行なわれる。
The compound represented by the formula (VI) is converted into cholesta-5,7-diene-3β, 25-diol represented by the formula (I) by removing the protecting group of 5,7-diene. This reaction is carried out by a usual method. That is, the formula (V
It is carried out at room temperature to its boiling point in tetrahydrofuran using an excess amount of lithium aluminum hydride (LiAlH 4 ) or vitride for the compound represented by I).

【0017】[0017]

【発明の効果】以上説明したように、本発明によって、
有用なステロイド誘導体であるコレスタ−5,7−ジエ
ン−3β,25−ジオールの効率的な新規製造法が提供
される。本発明の製造法は従来法に比較して、副生成物
がなく、効率よく、しかも誘導体合成にも適用できる汎
用性のあるものである。以下、本発明を実施例により詳
しく説明するが、これらは本発明を限定するものではな
い。
As described above, according to the present invention,
Provided is an efficient new method for producing cholester-5,7-diene-3β, 25-diol, which is a useful steroid derivative. Compared with the conventional method, the production method of the present invention has no by-products, is efficient, and has general versatility that can be applied to derivative synthesis. Hereinafter, the present invention will be described in detail with reference to Examples, but these do not limit the present invention.

【0018】実施例1 5α,8α−(4−フェニル−3,5−ジオキソ−1,2,
4−トリアゾリジン−1,2−ジイル)−6−コレステ
ン−3β,25−ジオール(VI)の合成 2−メチル−4−フェニルスルホニル−2−ブタノール
テトラヒドロピラニルエーテル(III)(51g)をテ
トラヒドロフラン(200ml)に溶かし、−20℃に冷
却したn−BuLi(1.6N)(100ml)を滴下し
て1時間撹拌した。1,3−ジメチル−2−イミダゾリ
ジノン(100ml)を加えた後、22−ヨード5α,8
α−(4−フェニル−3,5−ジオキソ−1,2,4−ト
リアゾリジン−1,2−ジイル)−6−エルゴステン−
3β−オール t−ブチルジメチルシリルエーテル(I
I)(100g)のテトラヒドロフラン溶液(400m
l)を−20〜0°で滴下した。さらに2時間0°〜室
温で撹拌した後、飽和塩化アンモニウム水溶液を加え酢
酸エチルで抽出した。ブラインで洗浄後、酢酸エチルを
濃縮した。残留物(IV)(147g)をメタノール(1
500ml)に溶解しp−トルエンスルホン酸(5g)を
加え、室温で1時間撹拌した。炭酸カリウムを加えて中
和しメタノールを留去した。クロロホルムで抽出、ブラ
インで洗浄後、濃縮した。化合物(V)を130g得
た。(V)(130g)をメタノール(1500ml)に
溶かし、Na2HPO4(20g)、5%Na−Hg(3
00g)を加え20時間0℃〜室温で撹拌した。水銀を
除き、メタノールを留去した。酢酸エチルで抽出、ブラ
インで洗浄後、濃縮し(VI)を65g得た。1 H NMR δ:0.80 (3H, s), 0.96 (3H, d), 0.97 (3H,
d), 1.15, 1.17 (各3H,s), 4.11 (1H, m), 6.24, 6.40
(各1H, ABq), 7.32-7.41 (5H, m)
Example 1 5α, 8α- (4-phenyl-3,5-dioxo-1,2,
Synthesis of 4-triazolidine-1,2-diyl) -6-cholestene-3β, 25-diol (VI) 2-Methyl-4-phenylsulfonyl-2-butanol tetrahydropyranyl ether (III) (51 g) was added to tetrahydrofuran (200 ml). ), And cooled to -20 ° C, n-BuLi (1.6N) (100 ml) was added dropwise and stirred for 1 hour. After adding 1,3-dimethyl-2-imidazolidinone (100 ml), 22-iodo 5α, 8
α- (4-phenyl-3,5-dioxo-1,2,4-triazolidine-1,2-diyl) -6-ergosten-
3β-ol t-butyldimethylsilyl ether (I
I) (100 g) in tetrahydrofuran solution (400 m
l) was added dropwise at -20 to 0 °. After further stirring for 2 hours at 0 ° to room temperature, saturated aqueous ammonium chloride solution was added and the mixture was extracted with ethyl acetate. After washing with brine, ethyl acetate was concentrated. The residue (IV) (147 g) was added to methanol (1
(500 ml), p-toluenesulfonic acid (5 g) was added, and the mixture was stirred at room temperature for 1 hr. Potassium carbonate was added to neutralize and methanol was distilled off. The mixture was extracted with chloroform, washed with brine, and concentrated. 130 g of compound (V) was obtained. (V) (130 g) was dissolved in methanol (1500 ml) and Na 2 HPO 4 (20 g), 5% Na-Hg (3
00g) was added, and the mixture was stirred for 20 hours at 0 ° C to room temperature. The mercury was removed and the methanol was distilled off. After extraction with ethyl acetate, washing with brine, and concentration, 65 g of (VI) was obtained. 1 H NMR δ: 0.80 (3H, s), 0.96 (3H, d), 0.97 (3H,
d), 1.15, 1.17 (3H, s each), 4.11 (1H, m), 6.24, 6.40
(Each 1H, ABq), 7.32-7.41 (5H, m)

【0019】実施例2 コレスタ−5,7−ジエン−3β,25−ジオール(I)
の合成 VI(65g)をテトラヒドロフラン(500ml)に溶か
し、0℃でVitride(70%トルエン溶液)(160m
l)を滴下した。滴下終了後2時間加熱還流した。冷却
後、アセトン(100ml)を滴下した。飽和塩化アンモ
ニウム水溶液を加えて、均一溶液とした後、無水硫酸マ
グネシウムを加えた。反応液を濾過して、濾液を濃縮し
た。残留物をメタノールから結晶化を行い、(I)を3
0g得た。 融点185〜188℃ UV:λmax 282nm (ε=12,000, エタノール)1 H NMR δ:0.62 (3H, s), 0.94 (3H, s), 0.97 (3H,
s), 1.16, 1.17 (各3H,s), 3.64 (1H, m), 5.39, 5.77
(各1H, m)
Example 2 Cholesta-5,7-diene-3β, 25-diol (I)
Synthesis VI (65 g) was dissolved in tetrahydrofuran (500 ml) and Vitride (70% toluene solution) (160 m) was added at 0 ° C.
l) was added dropwise. After completion of dropping, the mixture was heated under reflux for 2 hours. After cooling, acetone (100 ml) was added dropwise. A saturated ammonium chloride aqueous solution was added to make a uniform solution, and then anhydrous magnesium sulfate was added. The reaction solution was filtered and the filtrate was concentrated. The residue was crystallized from methanol to give (I) 3
0 g was obtained. Melting point 185 to 188 ° C. UV: λ max 282 nm (ε = 12,000, ethanol) 1 H NMR δ: 0.62 (3H, s), 0.94 (3H, s), 0.97 (3H,
s), 1.16, 1.17 (3H, s each), 3.64 (1H, m), 5.39, 5.77
(Each 1H, m)

───────────────────────────────────────────────────── フロントページの続き (72)発明者 辻 政弘 東京都中央区日本橋小網町19番12号 日清 製粉株式会社内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Masahiro Tsuji 19-12 Niamibashi Koamicho, Chuo-ku, Tokyo Nisshin Flour Milling Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 次式 【化1】 (式中、Xは臭素又は沃素原子を表わし、Rは耐塩基性
の水酸基の保護基を表わす)で示されるハロゲン化物
と、次式 【化2】 (式中、R′は耐塩基性の水酸基の保護基を表わす)で
示されるスルホン化合物とを塩基の存在下に反応させて
次式 【化3】 (式中R、R′は上記定義の通りである)で示される化
合物とし、次いで化合物(IV)の保護基を除去して次式 【化4】 で示される化合物とし次いで式(V)の化合物のフェニル
スルホニル基を除去して次式 【化5】 で示されるジオール化合物とし、次いで式(VI)の化合
物の5,7−ジエンの保護基を除去することを特徴とす
る次式 【化6】 で示されるコレスタ−5,7−ジエン−3β,25−ジオ
ールの製造法。
1. The following formula: (In the formula, X represents a bromine atom or an iodine atom, and R represents a base-resistant hydroxyl-protecting group), and a halogen compound represented by the following formula: (In the formula, R'represents a base-resistant hydroxyl-protecting group) and is reacted with a sulfone compound in the presence of a base to give the following formula: (Wherein R and R ′ are as defined above), and then the protecting group of compound (IV) is removed to give a compound of the following formula: A compound of formula (V) and then removing the phenylsulfonyl group of the compound of formula (V) A diol compound of formula (VI) and then removing the protecting group of the 5,7-diene of the compound of formula (VI). A process for producing cholester-5,7-diene-3β, 25-diol represented by
JP6102529A 1994-05-17 1994-05-17 Production of steroid derivative Pending JPH07309891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6102529A JPH07309891A (en) 1994-05-17 1994-05-17 Production of steroid derivative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6102529A JPH07309891A (en) 1994-05-17 1994-05-17 Production of steroid derivative

Publications (1)

Publication Number Publication Date
JPH07309891A true JPH07309891A (en) 1995-11-28

Family

ID=14329843

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6102529A Pending JPH07309891A (en) 1994-05-17 1994-05-17 Production of steroid derivative

Country Status (1)

Country Link
JP (1) JPH07309891A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109627279A (en) * 2019-02-01 2019-04-16 浙江花园营养科技有限公司 A kind of preparation method of activity of vitamin d3 intermediate
CN111892637A (en) * 2020-07-16 2020-11-06 山东海能生物工程有限公司 Preparation method of 7-dehydro-25-hydroxycholesterol

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109627279A (en) * 2019-02-01 2019-04-16 浙江花园营养科技有限公司 A kind of preparation method of activity of vitamin d3 intermediate
CN111892637A (en) * 2020-07-16 2020-11-06 山东海能生物工程有限公司 Preparation method of 7-dehydro-25-hydroxycholesterol

Similar Documents

Publication Publication Date Title
JP3063615B2 (en) Method for producing triarylsulfonium salt
US4554105A (en) Process for the preparation of 1-hydroxylated vitamin D compounds
FR2479214A1 (en) NEW COMPOUNDS DERIVED FROM VITAMIN D
JP2004511567A (en) Process for producing 7-substituted antiestrogen and production intermediate
JPS6258353B2 (en)
JP2505669B2 (en) Novel compound used for production of cholecalciferol derivative and process for producing the same
US20220267266A1 (en) Improved, cost effective process for synthesis of vitamin d3 and its analogue calcifediol from ergosterol
AU582789B2 (en) Vitamin d derivatives and methods for preparing same
JPH07309891A (en) Production of steroid derivative
DE69005709T2 (en) Adductaldehyde and its application in the production of vitamin D derivatives.
EP0045524B1 (en) 22-arylsulfonyl-24,25-dihydroxycholestanes and process for preparing the same
JPS5823660A (en) Manufacture of 1 alpha-hydroxyvitamin d or 1 alpha-hydroxy-previtamin d compound and adduct of previtamin d or tachysterol and dienophile
JP2793428B2 (en) Method for preparing 1α-hydroxy-secosterol compound
JPS58124800A (en) Manufacture of delta 5,7-steroid
JP2750170B2 (en) Method for producing steroid derivatives
JP2695473B2 (en) 24-oxosteroid derivative and method for producing the same
JPS6345249A (en) Fluorine derivative of activated vitamin d3
JP3483155B2 (en) Method for producing 1α, 25-dihydroxyvitamin D4 and D7
JP2501604B2 (en) Process for producing cholesta-1,4,6-trien-3-ones
JPH0667898B2 (en) Method for producing 22,23-secovitamin D or active form thereof or derivative thereof
JPS58126862A (en) Manufacture of 1-hydroxylated vitamine d compound
JP2879776B2 (en) Method for producing active vitamin D derivative
JP2818494B2 (en) Process for producing vitamin D2 compounds and corresponding 1α-hydroxylated derivatives
JPS6028986A (en) Production of steroid
JPH0362716B2 (en)

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040608

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20041019