JPH0517914B2 - - Google Patents

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Publication number
JPH0517914B2
JPH0517914B2 JP59186103A JP18610384A JPH0517914B2 JP H0517914 B2 JPH0517914 B2 JP H0517914B2 JP 59186103 A JP59186103 A JP 59186103A JP 18610384 A JP18610384 A JP 18610384A JP H0517914 B2 JPH0517914 B2 JP H0517914B2
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Prior art keywords
formula
ether
solution
reaction
compound
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JP59186103A
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Japanese (ja)
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JPS6163681A (en
Inventor
Takeshi Ooishi
Tadashi Nakada
Shigeto Nagao
Sachiko Takao
Masa Tanaka
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RIKEN Institute of Physical and Chemical Research
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RIKEN Institute of Physical and Chemical Research
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Priority to JP59186103A priority Critical patent/JPS6163681A/en
Publication of JPS6163681A publication Critical patent/JPS6163681A/en
Publication of JPH0517914B2 publication Critical patent/JPH0517914B2/ja
Granted legal-status Critical Current

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  • Pyrane Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

(発明の技術分野) 本発明は、エンド−1,3−ジメチル−2,9
−ジオキサビシクロ〔3,3,1〕ノナン
(endo−1,3−dimethyl−2,9−
dioxabicyclo〔3,3,1〕nonane)の新規な合
成法に関する。 (発明の背景) エンド−1,3−ジメチル−2,9−ジオキサ
ビシクロ〔3,3,1〕ノナン(A)は、木食い虫
(Trypodendron lineatum Oliv.)の被害を受け
た松から単離された化合物であり、この虫の誘引
物質と考えられている(V.Heeman et.al.,
Naturwiss.,63,344(1976)参照)。 そこで、この化合物(A)を、化学的に大量に合成
することができれば、木食い虫に対する誘引剤と
しての利用が可能である。 (発明の目的) 本発明の目的は、木食い虫の被害を受けた松か
ら単離され、木食い虫の誘引物質と考えられてい
るエンド−1,3−ジメチル−2,9−ジオキサ
ビシクロ〔3,3,1〕ノナンの新規な合成法を
提供することにある。 (発明の構成) <出発物質の合成> 本発明の出発物質は、(−)−(R)−1,3−ブタ
ンジオール()から、例えば次の工程により得
られる。 <目的化合物の合成> 得られた出発物質(1)を、LDA(リチウムジイソ
プロピルアミン)及びCH3COOtBuと反応させ、
β−ヒドロキシエステル(2)を得る。溶媒は、テト
ラヒドロフランが適当である。又、反応温度、反
応時間は、それぞれ−40〜−78℃、0.5〜3時間
が適当である。 得られたβ−ヒドロキシエステル(2)を酸化し
て、β−ケトエステル(3)を得る。酸化剤として
は、ジヨーンズ試薬−アセトン、ピリジニウムク
ロロクロナイト−ジクロルメタン、ピリジニウム
ジクロメイト−ジクロルメタンが適当である。反
応温度、反応時間は、それぞれ0℃〜室温、1〜
12時間が適当である。 得られたβ−ケトエステル(3)を、ジチオールと
ルイス酸で処理してラクトン(4)を得る。 ルイス酸としては、BF3−エーテル、塩化アル
ミニウムが適当である。溶媒は、塩化メチレン、
ジクロルエタン等が適当である。 反応温度、反応時間は、それぞれ0℃〜室温、
12〜72時間が適当である。 得られたラクトン(4)を、LDA及びCH3COOtBu
と反応させ、ヘミアセタール(5)を得る。 反応条件は、前記β−ヒドロキシエステル(2)を
得る場合の反応温度、反応時間と同じである。 得られたヘミアセタール(5)を、オルトギ酸エス
テル、カンフアースルホン酸と反応させて、アセ
タール(6)を得る。 溶媒は、メタノール−塩化メチレン、メタノー
ル等が適当である。 反応温度は、室温でよく、反応時間は、0.5〜
3時間が適当である。 得られたアセタール(6)を脱ジチオール化してケ
トン(7)を得る。脱ジチオール化剤は、N−ブロム
サクシミド(NBS)−AgNO3/CH3CN−水、ま
たはCuCl2/CuO/アセトン等が好適に用いられ
る。 前者の場合、反応条件は、0℃、15分〜1時間
が好適であり、又、後者の場合は、1〜3時間還
流を行うのが適当である。 得られたケトン(7)を立体選択的に還元してアル
コール(8)を得る。 還元剤としては、K−セレクトライド
(Selectride)〔
(Technical field of the invention) The present invention relates to endo-1,3-dimethyl-2,9
-dioxabicyclo[3,3,1]nonane (endo-1,3-dimethyl-2,9-
This invention relates to a new method for synthesizing dioxabicyclo[3,3,1]nonane). (Background of the invention) Endo-1,3-dimethyl-2,9-dioxabicyclo[3,3,1]nonane (A) is isolated from pine trees damaged by the woodworm (Trypodendron lineatum Oliv.). is a separated compound and is considered an attractant for this insect (V.Heeman et.al.,
Naturwiss., 63 , 344 (1976)). Therefore, if this compound (A) can be chemically synthesized in large quantities, it can be used as an attractant for woodworms. (Objective of the Invention) The object of the present invention is to use endo-1,3-dimethyl-2,9-dioxa, which is isolated from pine trees damaged by woodworms and is considered to be an attractant for woodworms. The object of the present invention is to provide a new method for synthesizing bicyclo[3,3,1]nonane. (Structure of the Invention) <Synthesis of Starting Material> The starting material of the present invention is obtained from (-)-(R)-1,3-butanediol (), for example, by the following process. <Synthesis of target compound> The obtained starting material (1) was reacted with LDA (lithium diisopropylamine) and CH 3 COO t Bu,
β-hydroxy ester (2) is obtained. A suitable solvent is tetrahydrofuran. The reaction temperature and reaction time are suitably -40 to -78°C and 0.5 to 3 hours, respectively. The obtained β-hydroxy ester (2) is oxidized to obtain the β-keto ester (3). As the oxidizing agent, John's reagent-acetone, pyridinium chlorochronite-dichloromethane, and pyridinium dichromate-dichloromethane are suitable. The reaction temperature and reaction time are 0°C to room temperature and 1 to
12 hours is appropriate. The obtained β-ketoester (3) is treated with a dithiol and a Lewis acid to obtain a lactone (4). Suitable Lewis acids include BF 3 -ether and aluminum chloride. Solvent: methylene chloride,
Dichloroethane and the like are suitable. The reaction temperature and reaction time are 0°C to room temperature, respectively.
12 to 72 hours is appropriate. The obtained lactone (4) was treated with LDA and CH 3 COO t Bu
to obtain hemiacetal (5). The reaction conditions are the same as the reaction temperature and reaction time when obtaining the β-hydroxy ester (2). The obtained hemiacetal (5) is reacted with orthoformate and camphorsulfonic acid to obtain acetal (6). Suitable solvents include methanol-methylene chloride, methanol, and the like. The reaction temperature may be room temperature, and the reaction time may be 0.5~
3 hours is appropriate. The obtained acetal (6) is dedithiolated to obtain the ketone (7). As the dedithiolating agent, N-bromsuccimide (NBS) -AgNO3 / CH3CN -water, CuCl2 /CuO/acetone, or the like is preferably used. In the former case, the reaction conditions are preferably 0°C and 15 minutes to 1 hour, and in the latter case, refluxing for 1 to 3 hours is suitable. The obtained ketone (7) is stereoselectively reduced to obtain alcohol (8). As a reducing agent, K-Selectride [

【式】〕、L−セレ クトライド〔[Formula]], L-Sele Ctride [

〔()の物理的性質〕[Physical properties of ()]

IR(neat):3410cm-1 参考例 2 シリル体()6.259gの塩化メチレン40ml溶
液にイソプロピルエチルアミン5.93g、
ClCH2OCH33.70gを加え、室温で2.5時間撹拌し
た。 反応後溶媒留去し、エーテルを加え、飽和食塩
水、10%HCl水溶液、飽和食塩水、飽和
NaHCO3水溶液、飽和食塩水で洗浄後、MgSO4
で乾燥した。 溶媒留去すると、メトキシメチルエーテル
()7.435gが得られた。これはそのまゝ次の反
応に付した。 〔()の物理的性質〕 NMR(CDCl3):δ 0.05(s;SiMe2) 0.89(s;tBu) 1.20(d、J=6.2Hz;Me) 3.37(s;OMe) 5.16(s;OCH2O) 参考例 3 シリル体()7.424gの無水テトラヒドロフ
ラン(THF)40ml溶液にBu4NF・3H2O 14.2g
を加え、室温で70分撹拌した。反応後水を加え、
エーテル抽出。 エーテル層をMgSO4で乾燥後、溶媒留去する
と、アルコール()2.380gが得られた。 水層を更にエーテル、クロロホルムで抽出し、
それぞれMgSO4で乾燥した。 溶媒留去後、それぞれシリカゲルカラムクロマ
ト(エーテル)に付すと、エーテル抽出分より
859mg、クロロホルム抽出分より422mgのアルコー
ル()が得られた。(合計3.661g) 〔()の物理的性質〕 NMR(CDCl3):δ 1.22(d,J=6.2Hz;Me) 、3.40(s;OMe) 4.66、4.69(それぞれd、J=7.0Hz;OCH2O) IR(neat):3410、1035cm-1 〔α〕26 D−70.6°(C=2.57、CHCl3) 参考例 4 ピリジニウムクロロクロメイト3.09g、3A・
モレキユラーシーブス2.39gの塩化メチレン20ml
けんだく液にアルコール()1.281gの塩化メ
チレン15ml溶液を滴下し室温1時間撹拌した。 反応後エーテルを加え、フロリジルカラムクロ
マトに付すとアルデヒド(1)934mgが得られた。 〔(1)の物理的性質〕 NHR(CDCl3):δ 1.28(d、J=6.4Hz;Me) 3.36(s;OMe) 4.66、4.68(それぞれd、J≒7Hz;OCH2O) 9.8(t、J=2.0Hz(CHO) IR(neat):1725cm-1 <目的化合物(A)の合成例> 実施例 1 ジイソプロピルアミン1.85mlの無水テトラヒド
ロフラン15ml溶液に、アルゴン気滴下−20℃で、
1.33N−BuLi−ヘキサン溶液10mlを滴下し、0℃
で30分撹拌後、−78℃でCH3COOtBu1.69mlを滴下
し、20分撹拌した。ついで、−78℃でアルデヒド
(1)834mgの無水THF10ml溶液を滴下し、同温で1
時間撹拌した。 反応後、飽和NaHCO3水溶液5mlを加え室温
にもどし、エーテル抽出した。エーテル層を水、
10%HCl水溶液、水、飽和NaHCO3水溶液、飽
和食塩水で洗浄後、MgSO4で乾燥した。溶媒留
去すると、β−ヒドロキシエステル(2)1.243gが
得られた。それはそのまゝ次の反応に付した。 一部をシリカゲル分取薄層クロマト(ヘキサ
ン:エーテル=2:3)で精製した。 〔(2)の物理的性質〕 NMR(CDCl3):δ 1.463(s;tBu) 2.17(d、J=6.4Hz;Me) 2.22(d、J=6.1Hz;Me) 3.83(s;OMe)、3.40(s;OMe) IR(neat):3460、1725cm-1 実施例 2 β−ヒドロキシエステル(2)230mgのアセトン10
ml溶液に0℃でジヨーンズ試薬1.3mlを1時間で
4回に分けて加え、さらに同温で1時間撹拌し
た。 反応後イソプロパノール1.5mlを加え溶媒留去
し、エーテル、水を加え、エーテル抽出した。エ
ーテル層を飽和NaHCO3水溶液、飽和食塩水で
洗浄後MgSO4で乾燥した。溶媒留去すると、β
−ケトエステル(3)217mgが得られた((1)からの収
率75%)。 一部をシリカゲル分取薄層クロマト(エーテ
ル:ヘキサン=3:2)で精製した。 〔(3)の物理的性質〕 NMR(CDCl3):δ 1.23(d、J=6.3Hz;CH3) 1.47(s;tBu) 3.34(s;OMe) 3.39(s;C2−H2) 4.19(m;C5−H)、4.63,4.65(それぞれd,J
=7Hz;OCH2O) IR(neat):1735、1720、1710cm-1 〔α〕24 D−13.9°(C=2.22、CHCl3) 実施例 3 β−ケトエステル(3)104mgの塩化メチレン2ml
溶液に0℃で1,2−エタンジチオール105μ、
BF3・Et2O0.25mlを加え、室温で3日間撹拌し
た。 反応後、氷冷下10%NaOH水溶液を加え、
CH2Cl2抽出し、10%NaOH水溶液、飽和食塩水
で洗浄後MgSO4で乾燥した。溶媒留去後シリカ
ゲルカラムクロマト(エーテル:ヘキサン=1:
1、エーテル)に付すとラクトン(4)の結晶82mgが
得られた(収率95%)。 エーテル−ヘキサンより再結晶するとmp92.5
〜93°の無色板状晶となる。 〔(4)の物理的性質〕 NMR(CDCl3):δ 1.43(d、J=6.4Hz;Me) 2.97(d、J=17.6Hz;C5〓−H) 3.18(d、J=17.6、2.4Hz;C5〓−H) 3.40(m;SCH2CH2S) 4.63(m;C2〓−H) IR(CHCl3):1725cm-1 〔α〕24 D+30.4°(C=1.72、CHCl3) 元素分析値: (C8H12S2O2) 計算値;C、47.03;H、5.92 実測値;C、47.09;H、5.94 実施例 4 アルゴン気流下、0℃でジイソプロピルアミン
0.61mlの無水THFの5ml溶液に1.33−BuLi−ヘ
キサン溶液3.06mlを滴下し、30分撹拌ついで−78
℃でCH3COOtBu0.58mlを滴下し、同温で20分撹
拌した。更にラクトン(4)545mgの無水テトラヒド
ロフラン5ml溶液を滴下し、1時間撹拌した。 反応後、飽和NaHCO3水溶液を加え、室温に
もどし、エーテル抽出した。エーテル層を飽和食
塩水で洗浄後MgSO4で乾燥した。溶媒留去後、
シリカゲルカラムクロマト(ヘキサン:エーテル
=2:1〜1:1)に付すと、ヘミアセタール(5)
768mgが得られた(収率92%)。 〔(5)の物理的性質〕 NMR(CDCl3):δ 1.15(d、J=6.3Hz;Me)、 1.47(s;tBu) 2.497、2.500(それぞれd、J=15Hz;C
2COO) 3.27(m;SCH2CH2S) 5.16(d、J=2Hz;OH) IR(neat):3450、1710cm-1 〔α〕26 D+12.9°(C=0.66、CHCl3) 実施例 5 ヘミアセタール(5)1.350gの塩化メチレン−メ
タノール(1:1)7ml溶液にオルトギ酸メチル
3.4ml、カンフアースルフオン酸7mgを加え、室
温1時間撹拌した。 反応後、エーテルを加え、有機層を飽和
NaHCO3水溶液、飽和食塩水で洗浄後、MgSO4
で乾燥した。溶媒留去すると、アセタール(6)
1.409gが得られた(収率100%) 〔(6)の物理的性質〕 NMR(CDCl3):δ 1.18(d、J=6.4Hz;Me) 1.46(s;tBu) 2.47、2.49(それぞれd、J=14.2Hz;C
2COO) 3.25(m;SCH2CH2S) 3.26(S;OMe) IR(neat):1725cm-1 〔α〕28 D+33.0℃(C=0.73、CHCl3) 実施例 6 硝酸銀4.33gのアセトニトリル24ml溶液に
Na2CO31.35gの水6ml溶液を加え室温15分撹拌、
ついで0℃でN−ブロモサクシイミド4.13gを加
え、5分撹拌し、更に0℃でアセタール(6)1.293
gの80%CH3CN水溶液15mlを加え15分撹拌した。 反応後飽和Na2SO3水溶液13.5ml、ヘキサン−
塩化メチレン(1:1)45mlを加え、撹拌後、セ
ライト過した。液を飽和NaHCO3水溶液、飽
和食塩水で洗浄後MgSO4で乾燥した。溶媒留去
するとケトン(7)1.045gが得られた。 〔(7)の物理的性質〕 NMR(CDCl3):δ 1.31(d、J=6.3Hz;Me) 1.46(s;tBu) 2.66、2.71(それぞれd、J=13.8Hz;C
2COO) 2.63(dd、J=14.8、2.0Hz;C5〓−H) 2.79(d、J=14.8Hz;C5〓−H) 3.25(S;OMe) IR(neat):1725cm-1 実施例 7 ケトン(7)1.045gの無水テトラヒドロフラン15
ml溶液に、アルゴン気流下−78℃でK−
Selectride (1Mテトラヒドロフラン溶液)5.8
mlを滴下し、同温で20分撹拌した。 反応後水24mlを加え、室温にもどし、エーテル
抽出した。エーテルを飽和食塩水で洗浄後
MgSO4で乾燥した。溶媒留去後、シリカゲルカ
ラムクロマト(ヘキサン:エーテル=1:1)に
付すと、アルコール(8)923mgが得られた(収率92
%)。 〔(8)の物理的性質〕 NHR(CDCl3):δ 1.19(d、J=6.4Hz;Me) 1.45(s;tBu) 1.84(dd、J=14.6、3.6Hz;C5〓−H) 2.13(dt、J=14.6、2.5Hz;C5〓−H) 2.40、2.65(それぞれd、J=13.7Hz;
CH2COO) 3.30(S;OMe) 3.91(d、J=9.5Hz;OH) 4.03(m;C4〓−H) IR(neat):3500、1730cm-1 〔α〕26 D+35.6(C=0.88、CHCl3) 実施例 8 アルコール(8)1.0gの塩化メチレン11ml溶液に、
アルゴン気流下、−40℃で1、3−プロパンジチ
オール8.7ml、BF3・Et2O3.3mlを滴下し、−40°〜
−20°で4時間撹拌後1時間かけ室温にもどした。 反応後溶媒を減圧留去し、残渣をシリカゲルカ
ラムクロマト(ヘキサン:酢酸エチル=1:4)
に付すと、ラクトン(9)733mgが得られた(収率73
%)。 〔(9)の物理的性質〕 NMR(CDCl3):δ 1.27(d、J=6.1Hz;Me) 2.93(d、J=17.3Hz;C7〓−H) 3.21(dd、J=17.3、2.0Hz;C7〓−H) 4.10(m;C2−H) 4.84(m;C4〓−H) IR(neat):3450、1730cm-1 〔α〕25 D+2.8°(C=2.28、CHCl3) 実施例 9 ラクトン(9)733mgの塩化メチレン7ml溶液にジ
イソプロピルエチルアミン1.02ml、
ClCH2OCH30.418mlを加え、室温6.5時間撹拌し
た。 反応後エーテルを加え、エーテル層を水、10%
HCl水溶液、水、飽和NaHCO3水溶液、飽和食
塩水で洗浄後、MgSO4で乾燥した。溶媒留去す
ると、メトキシメチルエーテル(10)749mgが得られ
た(収率88%)。 〔(10)の物理的性質〕 NMR(CDCl3):δ 1.25(d、J=6.4Hz;Me) 2.94(d、J=17.1Hz;C7〓−H) 3.22(dd、J=17.1、2.0Hz;C7〓−H) 3.38(s;OMe) 3.93(m;C2−H) 4.61、4.70(それぞれd、J=6.8Hz;OCH2O) 4.80(m;C4〓−H) IR(neat):1735cm-1 〔α〕26 D−7.2°(C=1.70、CHCl3) 実施例 10 ラクトン(10)593mgのジオキサン10ml溶液にラネ
ーニツケル(W−2)−ジオキサンけんだく液3.1
mlを加え、2.5時間環流した。 反応後、ラネーニツケルを別し、エタノール
洗浄し、液を留去後、シリカゲルカラムクロマ
ト(ヘキサン:酢酸エチル=1:1)に付すと、
ラクトン(11)287mgが得られた(収率73%)。 〔(11)の物理的性質〕 NMR:δ 1.24(d、J=6.1Hz;Me) 2.47(ddd、J=17.6、8.8,7.1Hz;C7〓−H) 2.59(dddd、J=17.6、7.1、5.4、1.7Hz;C7〓−
H) 3.36(s;OMe) 3.92(m;C2−H) 4.46(m;C4〓−H) 4.60、4.69(それぞれd、J=6.8Hz;OCH2O) IR(neat):1730cm-1 〔α〕27 D−33.5°(C=1.8、CHCl3) 実施例 11 ラクトン(11)286mgの無水エーテル(9ml)−無水
THF(4ml)混合溶液にアルゴン気流下、−78℃
で1.5M−MeLi−エーテル溶液1.22mlを滴下し、
1時間撹拌した。 反応後、飽和NaHCO3水溶液0.8mlを加え、室
温にもどし、エーテル、水を加えエーテル抽出
し、エーテル層を飽和食塩水で洗浄後、MgSO4
で乾燥した。溶媒留去すると、(12)と(13)の5.5:1
の混合物237mgが得られた。これはそのまま次の
反応に付した(収率77%)。 実施例 12 (12)と(13)の混合物233mgのメタノール18ml溶液に、
15%HCl水溶液1.8mlを加え、19時間環流した。 反応後、塩化メチレンを加え、飽和NaHCO3
水溶液で洗浄後、K2CO3で乾燥した。K2CO3
別し、液にp−トルエンスルホン酸20mgを加
え、60℃で40分濃縮する。塩化メチレン層を飽和
NaHCO3水溶液で洗浄後K2CO3で乾燥した。溶
媒を常圧留去後、シリカゲルカラムクロマト(ヘ
キサン:酢酸エチル=5:1)に付すと、アセタ
ール(A)72mgが得られた(収率43%)。 〔(A)の物理的性質〕 NMR(CDCl3):δ 1.20(d、J=6.1Hz;Me) 1.27(s;Me) 3.94(dqd、J=12.2、6.1、3.7Hz;C3−H)、
4.27(m;C5−H) IR(CHCl3):2930、1375、1075cm-1 〔α〕25 D−35.6°(C=0.71、ペンタン)
IR (neat): 3410 cm -1 Reference example 2 5.93 g of isopropylethylamine is added to a solution of 6.259 g of silyl compound () in 40 ml of methylene chloride.
3.70 g of ClCH 2 OCH 3 was added and stirred at room temperature for 2.5 hours. After the reaction, the solvent was distilled off, ether was added, saturated brine, 10% HCl aqueous solution, saturated brine, saturated
After washing with NaHCO 3 aqueous solution and saturated saline, MgSO 4
It was dried. When the solvent was distilled off, 7.435 g of methoxymethyl ether () was obtained. This was directly subjected to the next reaction. [Physical properties of ()] NMR (CDCl 3 ): δ 0.05 (s; SiMe 2 ) 0.89 (s; t Bu) 1.20 (d, J = 6.2 Hz; Me) 3.37 (s; OMe) 5.16 (s; OCH 2 O) Reference Example 3 Add 14.2 g of Bu 4 NF・3H 2 O to 40 ml of anhydrous tetrahydrofuran (THF) solution of 7.424 g of silyl compound ().
was added and stirred at room temperature for 70 minutes. After the reaction, add water,
Ether extraction. After drying the ether layer with MgSO 4 , the solvent was distilled off to obtain 2.380 g of alcohol ( ). The aqueous layer was further extracted with ether and chloroform,
Each was dried with MgSO4 . After the solvent was distilled off, the ether extract was subjected to silica gel column chromatography (ether).
859 mg, and 422 mg of alcohol () were obtained from the chloroform extract. (Total 3.661 g) [Physical properties of ()] NMR (CDCl 3 ): δ 1.22 (d, J = 6.2 Hz; Me), 3.40 (s; OMe) 4.66, 4.69 (d, J = 7.0 Hz, respectively; OCH 2 O) IR (neat): 3410, 1035 cm -1 [α] 26 D −70.6° (C = 2.57, CHCl 3 ) Reference example 4 Pyridinium chlorochromate 3.09 g, 3A・
Molecular sieves 2.39g methylene chloride 20ml
A solution of 1.281 g of alcohol () in 15 ml of methylene chloride was added dropwise to the suspension, and the mixture was stirred at room temperature for 1 hour. After the reaction, ether was added and the mixture was subjected to florisil column chromatography to obtain 934 mg of aldehyde (1). [Physical properties of (1)] NHR (CDCl 3 ): δ 1.28 (d, J = 6.4Hz; Me) 3.36 (s; OMe) 4.66, 4.68 (d, J≒7Hz, respectively; OCH 2 O) 9.8 ( t, J = 2.0 Hz (CHO) IR (neat): 1725 cm -1 <Synthesis example of target compound (A)> Example 1 A solution of 1.85 ml of diisopropylamine in 15 ml of anhydrous tetrahydrofuran was heated at -20°C under an argon atmosphere.
Add 10ml of 1.33N-BuLi-hexane solution dropwise and heat to 0°C.
After stirring for 30 minutes at -78°C, 1.69 ml of CH 3 COO t Bu was added dropwise, and the mixture was stirred for 20 minutes. Then, at -78℃, the aldehyde
(1) Add 834 mg of anhydrous THF 10 ml solution dropwise and
Stir for hours. After the reaction, 5 ml of saturated NaHCO 3 aqueous solution was added, the temperature was returned to room temperature, and the mixture was extracted with ether. ether layer to water,
After washing with 10% aqueous HCl solution, water, saturated aqueous NaHCO 3 solution, and saturated brine, it was dried over MgSO 4 . When the solvent was distilled off, 1.243 g of β-hydroxyester (2) was obtained. It was then passed on to the next reaction. A portion was purified by preparative thin layer chromatography on silica gel (hexane:ether = 2:3). [Physical properties of (2)] NMR (CDCl 3 ): δ 1.463 (s; tBu) 2.17 (d, J = 6.4 Hz; Me) 2.22 (d, J = 6.1 Hz; Me) 3.83 (s; OMe) , 3.40 (s; OMe) IR (neat): 3460, 1725 cm -1 Example 2 β-hydroxy ester (2) 230 mg of acetone 10
1.3 ml of Johns reagent was added in 4 portions over 1 hour at 0° C., and the mixture was further stirred at the same temperature for 1 hour. After the reaction, 1.5 ml of isopropanol was added, the solvent was distilled off, ether and water were added, and the mixture was extracted with ether. The ether layer was washed with saturated NaHCO 3 aqueous solution and saturated brine, and then dried with MgSO 4 . When the solvent is distilled off, β
-217 mg of ketoester (3) was obtained (yield 75% from (1)). A portion was purified by silica gel preparative thin layer chromatography (ether:hexane=3:2). [Physical properties of (3)] NMR (CDCl 3 ): δ 1.23 (d, J = 6.3Hz; CH 3 ) 1.47 (s; t Bu) 3.34 (s; OMe) 3.39 (s; C 2 −H 2 ) 4.19 (m; C 5 −H), 4.63, 4.65 (d, J, respectively
= 7 Hz; OCH 2 O) IR (neat): 1735, 1720, 1710 cm -1 [α] 24 D -13.9° (C = 2.22, CHCl 3 ) Example 3 104 mg of β-ketoester (3) in 2 ml of methylene chloride
105μ of 1,2-ethanedithiol in solution at 0℃,
0.25 ml of BF 3 ·Et 2 O was added, and the mixture was stirred at room temperature for 3 days. After the reaction, add 10% NaOH aqueous solution under ice cooling,
The mixture was extracted with CH 2 Cl 2 , washed with a 10% aqueous NaOH solution and saturated brine, and dried over MgSO 4 . After distilling off the solvent, silica gel column chromatography (ether:hexane=1:
1, ether) to obtain 82 mg of crystals of lactone (4) (yield 95%). mp92.5 when recrystallized from ether-hexane
Forms colorless plate crystals with an angle of ~93°. [Physical properties of (4)] NMR (CDCl 3 ): δ 1.43 (d, J = 6.4 Hz; Me) 2.97 (d, J = 17.6 Hz; C 5 -H) 3.18 (d, J = 17.6, 2.4Hz; C 5 〓-H) 3.40 (m; SCH 2 CH 2 S) 4.63 (m; C 2 〓-H) IR (CHCl 3 ): 1725cm -1 [α] 24 D +30.4° (C= 1.72, CHCl 3 ) Elemental analysis value: (C 8 H 12 S 2 O 2 ) Calculated value; C, 47.03; H, 5.92 Actual value: C, 47.09; H, 5.94 Example 4 Diisopropyl at 0°C under an argon stream amine
3.06 ml of 1.33-BuLi-hexane solution was added dropwise to a 5 ml solution of 0.61 ml of anhydrous THF, stirred for 30 minutes, and then -78
0.58 ml of CH 3 COO t Bu was added dropwise at °C, and the mixture was stirred at the same temperature for 20 minutes. Furthermore, a solution of 545 mg of lactone (4) in 5 ml of anhydrous tetrahydrofuran was added dropwise, and the mixture was stirred for 1 hour. After the reaction, saturated NaHCO 3 aqueous solution was added, the temperature was returned to room temperature, and the mixture was extracted with ether. The ether layer was washed with saturated brine and dried over MgSO 4 . After distilling off the solvent,
When subjected to silica gel column chromatography (hexane:ether = 2:1 to 1:1), hemiacetal (5)
768 mg was obtained (yield 92%). [Physical properties of (5)] NMR (CDCl 3 ): δ 1.15 (d, J = 6.3 Hz; Me), 1.47 (s; t Bu) 2.497, 2.500 (d, J = 15 Hz, respectively; C H
2 COO) 3.27 (m; SCH 2 CH 2 S) 5.16 (d, J = 2 Hz; OH) IR (neat): 3450, 1710 cm -1 [α] 26 D +12.9° (C = 0.66, CHCl 3 ) Example 5 Methyl orthoformate was added to a solution of 1.350 g of hemiacetal (5) in 7 ml of methylene chloride-methanol (1:1).
3.4 ml and 7 mg of camphorsulfonic acid were added, and the mixture was stirred at room temperature for 1 hour. After the reaction, add ether to saturate the organic layer.
After washing with NaHCO 3 aqueous solution and saturated saline, MgSO 4
It was dried. When the solvent is distilled off, the acetal (6)
1.409 g was obtained (yield 100%) [Physical properties of (6)] NMR (CDCl 3 ): δ 1.18 (d, J = 6.4 Hz; Me) 1.46 (s; t Bu) 2.47, 2.49 ( d, J = 14.2Hz; C H
2 COO) 3.25 (m; SCH 2 CH 2 S) 3.26 (S; OMe) IR (neat): 1725 cm -1 [α] 28 D +33.0°C (C = 0.73, CHCl 3 ) Example 6 Silver nitrate 4.33 g in a 24 ml solution of acetonitrile.
Add a solution of 1.35 g of Na 2 CO 3 in 6 ml of water and stir at room temperature for 15 minutes.
Next, 4.13 g of N-bromosuccinimide was added at 0°C, stirred for 5 minutes, and the acetal (6) 1.293 g was added at 0°C.
15 ml of an 80% CH 3 CN aqueous solution was added thereto, and the mixture was stirred for 15 minutes. After reaction, 13.5 ml of saturated Na 2 SO 3 aqueous solution, hexane-
After adding 45 ml of methylene chloride (1:1) and stirring, the mixture was filtered through Celite. The liquid was washed with saturated aqueous NaHCO 3 solution and saturated brine, and then dried with MgSO 4 . When the solvent was distilled off, 1.045 g of ketone (7) was obtained. [Physical properties of (7)] NMR (CDCl 3 ): δ 1.31 (d, J = 6.3 Hz; Me) 1.46 (s; t Bu) 2.66, 2.71 (d, J = 13.8 Hz, respectively; C H
2 COO) 2.63 (dd, J = 14.8, 2.0Hz; C 5 〓-H) 2.79 (d, J = 14.8Hz; C 5 〓-H) 3.25 (S; OMe) IR (neat): 1725cm -1 implementation Example 7 Ketone (7) 1.045 g of anhydrous tetrahydrofuran 15
ml solution at −78°C under an argon atmosphere.
Selectride (1M tetrahydrofuran solution) 5.8
ml was added dropwise and stirred at the same temperature for 20 minutes. After the reaction, 24 ml of water was added, the temperature was returned to room temperature, and the mixture was extracted with ether. After washing the ether with saturated saline
Dry with MgSO4 . After distilling off the solvent, it was subjected to silica gel column chromatography (hexane:ether = 1:1) to obtain 923 mg of alcohol (8) (yield: 92
%). [Physical properties of (8)] NHR (CDCl 3 ): δ 1.19 (d, J = 6.4 Hz; Me) 1.45 (s; t Bu) 1.84 (dd, J = 14.6, 3.6 Hz; C 5 〓−H ) 2.13 (dt, J = 14.6, 2.5Hz; C 5 〓-H) 2.40, 2.65 (d, J = 13.7Hz, respectively;
CH 2 COO) 3.30 (S; OMe) 3.91 (d, J=9.5Hz; OH) 4.03 (m; C 4 〓−H) IR (neat): 3500, 1730cm -1 [α] 26 D +35.6 ( C=0.88, CHCl 3 ) Example 8 In a solution of 1.0 g of alcohol (8) in 11 ml of methylene chloride,
Under an argon stream, 8.7 ml of 1,3-propanedithiol and 3.3 ml of BF 3 Et 2 O were added dropwise at -40°C.
After stirring at -20° for 4 hours, the mixture was returned to room temperature over 1 hour. After the reaction, the solvent was distilled off under reduced pressure, and the residue was subjected to silica gel column chromatography (hexane: ethyl acetate = 1:4).
733 mg of lactone (9) was obtained (yield 73
%). [Physical properties of (9)] NMR (CDCl 3 ): δ 1.27 (d, J = 6.1 Hz; Me) 2.93 (d, J = 17.3 Hz; C 7 -H) 3.21 (dd, J = 17.3, 2.0Hz; C 7 〓-H) 4.10 (m; C 2 -H) 4.84 (m; C 4 〓-H) IR (neat): 3450, 1730cm -1 [α] 25 D +2.8° (C= 2.28, CHCl 3 ) Example 9 A solution of 733 mg of lactone (9) in 7 ml of methylene chloride, 1.02 ml of diisopropylethylamine,
0.418 ml of ClCH 2 OCH 3 was added and stirred at room temperature for 6.5 hours. After the reaction, add ether and dilute the ether layer with water, 10%.
After washing with an aqueous HCl solution, water, a saturated aqueous NaHCO 3 solution, and a saturated saline solution, it was dried over MgSO 4 . When the solvent was distilled off, 749 mg of methoxymethyl ether (10) was obtained (yield: 88%). [Physical properties of (10)] NMR (CDCl 3 ): δ 1.25 (d, J = 6.4 Hz; Me) 2.94 (d, J = 17.1 Hz; C 7 -H) 3.22 (dd, J = 17.1, 2.0Hz; C 7 〓-H) 3.38 (s; OMe) 3.93 (m; C 2 -H) 4.61, 4.70 (d, J = 6.8Hz, respectively; OCH 2 O) 4.80 (m; C 4 〓-H) IR (neat): 1735 cm -1 [α] 26 D -7.2° (C = 1.70, CHCl 3 ) Example 10 Raney nickel (W-2)-dioxane suspension 3.1 in a solution of 593 mg of lactone (10) in 10 ml of dioxane
ml and refluxed for 2.5 hours. After the reaction, the Raney nickel was separated, washed with ethanol, the liquid was distilled off, and then subjected to silica gel column chromatography (hexane: ethyl acetate = 1:1).
287 mg of lactone (11) was obtained (yield 73%). [Physical properties of (11)] NMR: δ 1.24 (d, J = 6.1 Hz; Me) 2.47 (ddd, J = 17.6, 8.8, 7.1 Hz; C 7 〓-H) 2.59 (dddd, J = 17.6, 7.1, 5.4, 1.7Hz; C 7 〓−
H) 3.36 (s; OMe) 3.92 (m; C 2 -H) 4.46 (m; C 4 -H) 4.60, 4.69 (d, J = 6.8Hz, respectively; OCH 2 O) IR (neat): 1730cm - 1 [α] 27 D −33.5° (C = 1.8, CHCl 3 ) Example 11 Lactone (11) 286 mg in anhydrous ether (9 ml) - anhydrous
THF (4 ml) mixed solution under argon atmosphere at -78℃
Add 1.22 ml of 1.5M-MeLi-ether solution dropwise,
Stirred for 1 hour. After the reaction, add 0.8 ml of saturated NaHCO 3 aqueous solution, return to room temperature, add ether and water and extract with ether. After washing the ether layer with saturated brine, MgSO 4
It was dried. When the solvent is distilled off, the ratio of (12) and (13) is 5.5:1.
237 mg of the mixture was obtained. This was directly subjected to the next reaction (yield 77%). Example 12 A solution of 233 mg of the mixture of (12) and (13) in 18 ml of methanol,
1.8 ml of 15% HCl aqueous solution was added, and the mixture was refluxed for 19 hours. After the reaction, add methylene chloride and saturated NaHCO3
After washing with an aqueous solution, it was dried with K2CO3 . K 2 CO 3 was separated, 20 mg of p-toluenesulfonic acid was added to the liquid, and the mixture was concentrated at 60°C for 40 minutes. Saturate the methylene chloride layer
After washing with an aqueous NaHCO 3 solution, it was dried with K 2 CO 3 . After evaporating the solvent under normal pressure, the residue was subjected to silica gel column chromatography (hexane:ethyl acetate=5:1) to obtain 72 mg of acetal (A) (yield: 43%). [Physical properties of (A)] NMR (CDCl 3 ): δ 1.20 (d, J = 6.1 Hz; Me) 1.27 (s; Me) 3.94 (dqd, J = 12.2, 6.1, 3.7 Hz; C 3 −H ),
4.27 (m; C 5 -H) IR (CHCl 3 ): 2930, 1375, 1075 cm -1 [α] 25 D -35.6° (C = 0.71, pentane)

Claims (1)

【特許請求の範囲】 1 式: で示される化合物をリチウムジイソプロピルアミ
ン及びCH3COO(t−C4H9)で処理した後、酸化
して式: tBuは、t−ブチル基を示す。) で示される化合物を得、該化合物をルイス酸の存
在下でジチオールで処理して、式: で示される化合物を得、該化合物をリチウムジイ
ソプロピルアミン及びCH3COO(t−C4H9)で処
理して、式: tBuは前記に同じ。) で示される化合物を得、該化合物を、カンフアー
スルホン酸及びCH(OCH33と反応させて、式 tBuは、前記に同じ。) で示される化合物を得、該化合物を脱ジチオール
化して、式: tBuは、前記に同じ。) で示される化合物を得、該化合物を還元して、
式: tBuは、前記に同じ。) で示される化合物を得、該化合物を、ルイス酸の
存在下でジチオールと反応させて、式: で示される化合物を得、該化合物を塩基の存在
下、CH3OCH2Clと反応させ、式: で示される化合物を得、該化合物をラネー・ニツ
ケルで処理して、式 で示される化合物を得、該化合物をメチルリチウ
ムで処理して、式: 及び 式: で示される化合物の混合物を得、更に、該混合物
を酸性条件下で還流及び、酸処理して、式 で示される化合物を得ることを特徴とするエンド
−1,3−ジメチル−2,9−ジオキサビシクロ
〔3.3.1〕ノナンの合成法。
[Claims] 1 Formula: The compound represented by is treated with lithium diisopropylamine and CH 3 COO (t-C 4 H 9 ) and then oxidized to form the formula: ( t Bu represents a t-butyl group.) A compound represented by the formula: A compound of formula : ( t Bu is the same as above) A compound represented by the formula ( t Bu is the same as above.) A compound represented by the following was obtained, and the compound was dedithiolated to form the formula: ( t Bu is the same as above.) Obtain the compound represented by, reduce the compound,
formula: ( t Bu is the same as above.) A compound represented by the formula: A compound of formula: A compound of formula A compound of formula: and formula: A mixture of compounds represented by the formula is obtained, and the mixture is further refluxed and acid-treated under acidic conditions to give A method for synthesizing endo-1,3-dimethyl-2,9-dioxabicyclo[3.3.1]nonane, which is characterized by obtaining a compound represented by:
JP59186103A 1984-09-05 1984-09-05 Synthesis of endo-1,3-dimethyl-2,9-dioxabicyclo-(3.3.1)nonane Granted JPS6163681A (en)

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Application Number Priority Date Filing Date Title
JP59186103A JPS6163681A (en) 1984-09-05 1984-09-05 Synthesis of endo-1,3-dimethyl-2,9-dioxabicyclo-(3.3.1)nonane

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Application Number Priority Date Filing Date Title
JP59186103A JPS6163681A (en) 1984-09-05 1984-09-05 Synthesis of endo-1,3-dimethyl-2,9-dioxabicyclo-(3.3.1)nonane

Publications (2)

Publication Number Publication Date
JPS6163681A JPS6163681A (en) 1986-04-01
JPH0517914B2 true JPH0517914B2 (en) 1993-03-10

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JP59186103A Granted JPS6163681A (en) 1984-09-05 1984-09-05 Synthesis of endo-1,3-dimethyl-2,9-dioxabicyclo-(3.3.1)nonane

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Country Link
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