马尾松松针中木脂素苷的分离与结构鉴定

目的研究松科(Pinaceae)植物马尾松(PINUS MASSONIANA Lamb.)松针(pine needles)的化学成分。方法利用DIAION HP-20,TOYOPEARL HW-40等色谱技术分离纯化,根据化合物的理化性质和光谱数据(UV,IR,MS,^{1H-1<>/supH COSY,HMQC,DEPT,HMBC和ORD等)进行结构鉴定。结果从马尾松松针水煎液的正丁醇萃取部位分离得到3个化合物,分别鉴定为化合物4(massonianoside A):(7S,8R)-3,4,9′-三羟基-3-甲氧基-7,8-二氢苯并呋喃-1′-丙醇基新木脂素-9-o-α-L-鼠李糖苷;化合物5(massonianoside C):(7S,8R)-9,9′-二羟基-3,3′-二甲氧基-7,8-二氢苯并呋喃-1′-丙醇基新木脂素-4-o-α-L-鼠李糖苷;化合物6(cedrusin-4-o-β-glucoside):(7S,8R)-3,9,9′-三羟基-3-甲氧基-7,8-二氢苯并呋喃-1′-丙醇基新木脂素-4-o-β-D-葡糖苷。结论化合物4和5为新化合物。}     

马尾松松针中木脂素类化学成分的研究

目的研究松科(Pinaceae)植物马尾松(P.massoniana Lamb.)松针(pine needles)水煎液中的化学成分。方法利用Diaion HP-20,Toyopearl HW-40和硅胶等柱色谱技术进行分离纯化,根据化合物的理化性质和光谱数据进行结构鉴定。结果从马尾松针水煎液镇痛作用较强的正丁醇萃取部位分离得到3个木脂素类化合物,其化学结构分别确定为化合物7(massonianoside D): (7S,8r)-4,9′-二羟基-3,3′-二甲氧基-7,8-二氢苯骈呋喃-1′-丙醇基新木脂素-9-O-α-L-鼠李糖苷;化合物8(异落叶松脂素):4,4′,9,9′-四羟基-3,3′-二甲氧基-7-苯基四氢萘木脂素;化合物9(异落叶松脂素-9-O-木糖苷):4,4′,9′-三羟基-3,3′-二甲氧基-7-苯基四氢萘木脂素-9-O-β-D-木糖苷。结论化合物7为新化合物,化合物8,9为首次从本植物中分离得到。     

马尾松松针中木脂素类成分的分离与鉴定

目的研究松科植物马尾松(Pinus massoniana Lamb.)松针的化学成分。方法利用色谱技术分离纯化,根据化合物的理化性质和光谱数据进行结构鉴定。结果从马尾松松针水煎液的正丁醇部位分离得到3个化合物,分别鉴定为:(7S,8R)-3′,4,9′-三羟基-4-甲氧基-9-O-莽草酰基-7,8-二氢苯并呋喃-1′-丙基新木脂素(massonianoid A,I),(7S,8R)-4,9,9′-三羟基-3,3′-二甲氧基-7,8-二氢苯并呋喃-1′-丙基新木脂素(II),4,4′,8-三羟基-4,4′-二甲氧基-9-木脂内酯(III)。结论化合物I为新化合物,II和III为首次从本植物中分离得到。     

海风藤中新木脂素类PAF拮抗活性成分的研究

自中药海风藤[Piper kadsura (Choisy)Ohwi]的藤茎中又分离得到四个macrophyllin型双环[3,2,1]辛烷类新木脂素,经光谱分析及衍生物的制备,确定化合物Ⅰ和Ⅲ为新结构,命名为风藤素K(kadsurenin K)和风藤素L(kadsurenin L),其化学结构分别为7R,8R,3′R,5′R-△^8′-3,5′-二甲氧基-4-羟基-2′,3′,4′,5′-四氢-2′,4′-氧-7.3′,8.5′-新木脂素(Ⅰ)和7R,8R,3′S,4′R,5′R-△^8′-3,4,5′-三甲氧基-4′-乙酰氧基-2′,3′,4′,5′-四氢-2′-氧-7.3′,8.5′-新木脂素(Ⅲ)。化合物Ⅱ和Ⅳ分别为已报道过的风藤素C和风藤素B。化合物Ⅰ～Ⅳ均有明显的PAF受体拮抗活性。     

南柴胡根中木脂素苷类化合物的研究

目的研究南柴胡根中的木脂素苷类化学成分。方法应用色谱方法分离化合物,利用化学方法和波谱方法鉴定所得化合物的化学结构。结果从南柴胡根中得到两个木脂素苷：2,3-E-2,3-二氢-2-(3′-甲氧基-4′-O-β-D-葡糖基-苯基)-3-羟甲基-5-(3″-羟基-丙烯基)-7-甲氧基-1-苯骈-［b］-呋喃(1)和2,3-E-2,3-二氢-2-(3′-甲氧基-4′-羟基-苯基)-3-羟甲基-5-(3″-羟基-丙烯基)-7-O-β-D-吡喃葡糖基-1-苯骈-［b］-呋喃(2),二者均为(+)2S,3R型和(-)2R,3S型非对映异构体的混合物,且都以(+)2S,3R型的量稍多。结论化合物1和2均为首次从柴胡属植物中分离得到,其中化合物2中的(+)2S,3R-2,3-二氢-2-(3′-甲氧基-4′-羟基-苯基)-3-羟甲基-5-(3″-羟基-丙烯基)-7-O-β-D-吡喃葡糖基-1-苯骈-［b］-呋喃为新化合物。     

红松松针中木脂素类成分的分离与鉴定

目的研究红松松针中的木脂素类成分,为松属植物的化学分类学研究提供依据。方法采用反复硅胶、聚酰胺、ODS、Sephadex LH-20柱色谱等方法进行分离纯化,根据理化性质和波谱分析对分离得到的化合物进行结构鉴定。结果从红松松针中分离得到8个化合物,分别鉴定为(+)-异落叶松脂素-9-O-β-D-吡喃木糖苷((+)-isolariciresinol-9-O-β-D-xylopyranoside,1)、(+)-异落叶松脂素-9-O-β-D-吡喃葡萄糖苷((+)-isolariciresinol-9-O-β-D-glucopyranoside,2)、7S,8R-苏式-3′,4,9′-三羟基-3-甲氧基-7,8-二氢苯并呋喃-1′-丙醇基新木脂素-9-O-α-L-吡喃鼠李糖苷(7S,8R-threo-3′,4,9′-trihydroxy-3-methoxy-4′,7-epoxy-neolignan-9-O-α-L-rhamnopyranoside,3)、7S,8R-苏式-3′,9,9′-三羟基-3-甲氧基-7,8-二氢苯并呋喃-1′-丙醇基新木脂素-4-O-α-L-吡喃鼠李糖苷(7S,8R-threo-3′,9,9′-trihydroxy-3-methoxy-4′,7-epoxy-neolignan-4-O-α-L-rhamnopyranoside,4)、7R,8S-赤式-4,7,9-三羟基-3,3′-二甲氧基-8-O-4′-新木脂素-9′-O-α-L-吡喃鼠李糖苷(7R,8S-erythro-4,7,9-trihydrox-y-3,3′-dimethoxy-8-O-4′-neolignan-9′-O-α-L-rhamnopyranoside,5)、7S,8S-苏式-4,7,9-三羟基-3,3′-二甲氧基-8-O-4′-新木脂素-9′-O-α-L-吡喃鼠李糖苷(7S,8S-threo-4,7,9-trihydroxy-3,3′-dimethoxy-8-O-4′-neolignan-9′-O-α-L-rhamnopyranoside,6)、7S,8S-苏式-3′,4,7,9-四羟基-3-甲氧基-8-O-4′-新木脂素-9′-O-α-L-吡喃鼠李糖苷(7S,8S-threo-3′,4,7,9-tetrahydroxy-3-methoxy-8-O-4′-neolignan-9′-O-α-L-rhamnopyranoside,7)、7R,8S-赤式-3′,4,9,9′-四羟基-3-甲氧基-8-O-4′-新木脂素-7-O-β-D-吡喃葡萄糖苷(7R,8S-erythro-3′,4,9,9′-tetrahydroxy-3-methoxy-8-O-4′-neolignan-7-O-β-D-glucopyr-anoside,8)。结论化合物1~8均为首次从红松中分离得到。     

香榧假种皮中的木脂素成分

目的研究香榧假种皮中的化学成分。方法采用色谱技术分离纯化,自85%乙醇提取物中分得3个木脂素化合物,应用光谱技术(IR,EI-MS,¹HNMR,¹³CNMR,DEPT,2D-NMR),确定了它们的化学结构。结果3个化合物分别为松脂素(I),二氢脱水二聚松柏醇(II),(7,8-cis-8,8′-trans)-2′,4′-二羟基-3,5-二甲氧基-落叶松脂素(III)。结论 以上化合物均为首次从该植物中分得,其中III为一新化合物。     

马尾松松针中化学成分的分离与结构鉴定马尾松松针中化学成分的分离与结构鉴定

目的研究松科植物马尾松(Pinus massoniana Lamb.)松针的化学成分。方法应用色谱技术分离纯化,IR,NMR,MS等波谱方法解析化学结构。结果从马尾松松针中分离出4个化合物,分别鉴定为:3-甲氧基-9′-O-α-L-鼠李糖基-4′:7,5′:8-二氧环新木脂素-4,9-二醇(命名为massonianoside E,I),4,4′,8,8′,9-五羟基-3,3′-二甲氧基-7,9′-单环氧木脂素(II),伞花内酯(III),4-(4′-羟基-3′-甲氧基苯基)-2-丁酮(IV)。结论化合物I为新化合物,II,III和IV为首次从松科植物中分离得到。     

浅裂鳞毛蕨中的一个新二氢黄酮

目的研究浅裂鳞毛蕨(Dryopteris sublaeta Ching et Hsu)的化学成分。方法利用硅胶柱色谱进行分离纯化，根据化合物的理化性质和光谱数据鉴定结构。结果从浅裂鳞毛蕨中分离并鉴定了4个化合物，分别为：2(S)-5,7,3′-三羟基-6,8-二甲基-5′-甲氧基-二氢黄酮(1)，荚果蕨素(5,7-二羟基-6,8-二甲基-4′-甲氧基-二氢黄酮，matteucinol)(2)，去甲氧基荚果蕨素(5,7-二羟基-6,8-二甲基-二氢黄酮，desmethoxymatteucinol)(3)和2′-羟基去甲氧基荚果蕨素(5,7,2′-三羟基-6,8-二甲基-二氢黄酮,2′-hydroxy-desmethoxymatteucinol)(4)。结论化合物1为新化合物，其余化合物均为首次从该属植物中分离得到。     

卷柏中一个新木脂素苷的分离与鉴定

目的研究卷柏的化学成分。方法利用大孔吸附树脂、Sephadex LH-20、硅胶柱色谱进行分离纯化，根据化合物的理化性质和光谱数据鉴定结构。结果从卷柏中分离得到4个化合物，分别鉴定为(7S,8r)-7,8-二氢-7-(4-羟基-3,5-二甲氧基苯基)-8-羟甲基-［1′-(7′-羟基)乙基-5′-甲氧基］苯骈呋喃-4-O-β-D-葡糖苷(命名为卷柏苷C，化合物I)、D-甘露醇(化合物II)、酪氨酸(化合物III)、莽草酸(化合物IV)。结论化合物I为新化合物，化合物II和III为首次从卷柏属植物中分离得到,IV为首次从卷柏中分离得到。     

Two new dihydrobenzofuran lignans from Rabdosia lophanthoides (Buch.-Ham.ex D.Don) Hara

Two new dihydrobenzofuran lignanosides, (7R,8S)-4,3′,9′-trihydroxyl-3-methoxyl-7,8-dihydrobenzofuran-1′-propylneolignan-9-O-(6-O-syringoyl)-β-d-glucopyranoside, named lophanthoside B (1) and (7R,8S)-4,9,9′-trihydroxyl-3-methoxyl-7,8-dihydrobenzofuran-1′-propylneolignan-3′-O-β-d-glucopyranoside (2), an enantiomer of umbroside, along with four known dihydrobenzofuran lignans (3–6), were isolated from 50% acetone extract of Rabdosia lophanthoides (Buch.-Ham.ex D.Don) Hara. Their structures were elucidated by NMR and MS experiments.     

Coumarins Isolated from the Roots of Seseli resinosum. in Turkey

Abstract

Seseli resinosum. Freyn et Sint. (Umbelliferae) is a perennial herb that grows in the northern region of Anatolia, Turkey. The n.-hexane extract obtained from the roots of S. resinosum. was investigated for the presence of coumarins. Three angular-type pyranocoumarins and two linear-type furocoumarins were isolated from the roots. The compounds were identified as (+)-samidin [(3′S., 4′S.)-3′-senecioyloxy-4′-acetoxy-3′, 4′-dihydroseselin] (1), (?)-anomalin [(3′R., 4′R.)-3′, 4′-diangeloyloxy-3′, 4′-dihydroseselin] (2), calipteryxin (3′R., 4′R.)-3′-angeloyloxy-4′-senecioyloxy-3′, 4′-dihydroseselin (3), isoimperatorin (4), and deltoin (5). The structures were determined using spectroscopic methods (¹H NMR, ¹³C NMR, ¹H-¹H COSY, ¹H-¹³C COSY, HMBC, MS), physical methods (melting point and optical rotation), and chemical correlations with known compounds that have been described in the literature. The chemotaxonomic significance of these isolated coumarins is discussed in the genus Seseli. L.     

Two novel flavanes from the leaves of Morus alba L.

Two new flavanes, (2R,4S)-2′,4′-dihydroxy-2H-furan-(3″,4″:8,7)-flavan-4-ol (1) and (2S)-2′,4′-dihydroxy-7-methoxyl-8-butyricflavane (2), together with four known flavonoids, were isolated from the leaves of Morus alba L. Their structures were determined on the basis of spectroscopic analysis.     

Note: A new chromone from Ficus lyrata

A new chromone, named 5,6-dihydroxy-2-methylchromone (FL-2), along with seven known flavonoids, 5-hydroxy-7,3,3′,4′-tetramethoxyflavone (FL-3), 5,4′-dihydroxy-6,7,8-trimethoxyflavone (FL-4), 5,4′-dihydroxy-7,8-dimethoxyflavone (FL-5), 4-methoxychalcone (FL-6), 7,4′-dimethoxyapigenin (FL-7), 5,7,4′-trihydroxy-2′,3′,6′-trimethoxyisoflavone (FL-8?a rare flavonoid), acacetin-7-O-glucoside (FL-9) and acacetin-7-O-neohesperidoside (FL-10), and β-sitosterol-d-glucoside (FL-1) have been isolated from the leaves of Ficus lyrata. Their structures have been established on the basis of chemical and spectral evidence (IR, UV, ¹H NMR, ¹³C NMR and mass spectra).     

大叶茜草化学成分的研究

自大叶茜草Rubia schumanniana Pritz的根中分离到五种化学成分,其中一个经光谱及化学方法测定,证明结构为3′-甲氧羰基-4′-羟基-6,6-二甲基萘骈(1′,2′-2,3)吡喃,是新化合物,命名为大叶茜草素(rubimaillin)。另外四个为已知成分,其中三个为蒽醌类化合物,分别鉴定为1-羟基-2-羟甲基蒽醌,1-羟基-2-甲基蒽醌及1,4-二羟基-2-甲基蒽醌,另一为β-谷甾醇。     

桉叶苷的分离和结构

目的　研究垂枝赤桉Eucalyptus camaldulensis var. pendula Blak. et Jacobs叶的化学成分。方法　采用各种色谱技术进行分离纯化,用IR, MS, ¹HNMR, ¹³CNMR(DEPT), ¹H-¹H COSY, ¹³C-¹H COSY, COLOC和X-射线单晶衍射鉴定化合物。结果　分离得到了5个化合物：三十烷醇(I),β-谷甾醇(II),对羟基苯甲酸(III), 胡萝卜苷(IV), 5,7-二羟基-2-甲基-苯骈吡喃酮-7-O-β-D-{6-O-［4R-(1-甲基-1-羟基)-乙基环己-1-烯］-甲酰基}-吡喃葡糖(V)。结论　所有化合物均为首次从该植物中分得,V为一个新化合物,命名为桉叶苷(camaldulenside)。     

Two new neolignan glucosides from Arctii Fructus

Two new neolignan glucosides named (7S, 8R)-4,7,9,9′-tetrahydroxy-3,3′-dimethoxyl-7′-oxo-8-4′-oxyneolignan-4-O-β-d-glucopyranoside (1) and (7′S, 8′R, 8S)-4,4′,9′-trihydroxy-3,3′-dimethoxy-7′,9-epoxylignan-7-oxo-4-O-β-d-glucopyranosyl-4′-O-β-d-glucopyranoside (2), together with two small molecular peptides named 3-benzyl-6-(1-hydroxyethyl)-2,5-piperazinedione (3) and 3-benzyl-2,5-piperazinedione (4), were isolated from the extract of Arctii Fructus. Their structures and absolute configurations were elucidated by various spectroscopic methods (IR, HR-ESI-MS, 1D and 2D NMR, and CD).     

云南红豆杉化学成分的研究IV:二个新紫杉烷类三环二萜成分的分离和鉴定

在继续从云南红豆杉(Tasus yunnanensis ChengetL.K.Fu)树皮中寻找抗肿瘤活性成分的研究中,又分离出7个紫杉烷类二萜化合物,经光谱解析(MS,¹HNMR,¹H-¹HCOSY,¹³CNMR,¹³C-¹HCOSY and ¹³C-¹HCOLOC),鉴定其中5个为已知化合物:7-epi-10-deacetyltaxol(I),7-epi-10-deacetylcephalomannine(II),10-deacetyltaxol(III),10-deacetylcephalomannine(IV)和10-deacetylbaccatinIII(VII);2个新化合物是13(2′,3′-dihydroxy-3′-phenyl)-propionylbaccatin,III(V)和9-deoxo-9α-hydroxytaxol(VI),分别命名为云南红豆杉醇(yunnanxol)和云南红豆杉胺(yunnanxamine)。     

Water-soluble constituents from aerial roots of Ficus microcarpa

Three new water-soluble constituents [ficuscarpanoside B (1), (7E,9Z)-dihydrophaseic acid 3-O-β-d-glucopyranoside (4) and ficuscarpanic acid (6)] and the natural product 2,2′-dihydroxyl ether (7) have been isolated, together with three known compounds [(7S,8R)-syringoylglycerol (2), (7S,8R)-syringoylglycerol-7-O-β-d-glucopyranoside (3) and icariside D₂ (5)] from the aerial roots of Ficus microcarpa. Identification of their structures was achieved by 1D and 2D NMR experiments, including ¹H–¹H COSY, NOESY, HMQC and HMBC methods and FAB mass spectral data.