1
|
Yoshikawa K, Ikuta M, Arihara S, Matsumura E, Katayama S. Two new steroidal derivatives from the fruit body of Chlorophyllum molybdites. Chem Pharm Bull (Tokyo) 2001; 49:1030-2. [PMID: 11515573 DOI: 10.1248/cpb.49.1030] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Two new steroid derivatives, (22E,24R)-3alpha-ureido-ergosta-4,6,8(14),22-tetraene (1) and (22E,24R)-5alpha,8alpha-epidioxyergosta-6,9,22-triene-3beta-ol 3-O-beta-D-glucopyranoside (2) were isolated from the fruit bodies of Chlorophyllum molybdites (Agaricaceae). The structures were established by spectroscopic and chemical methods. These compounds exhibited cytotoxicity against Kato III cells.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan.
| | | | | | | | | |
Collapse
|
2
|
Yoshikawa K, Bando S, Arihara S, Matsumura E, Katayama S. A benzofuran glycoside and an acetylenic acid from the fungus Laetiporus sulphureus var. miniatus. Chem Pharm Bull (Tokyo) 2001; 49:327-9. [PMID: 11253926 DOI: 10.1248/cpb.49.327] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A new benzofuran glycoside, masutakeside I (1) and a new C10 acetylenic acid, masutakic acid A (2) were isolated from the fruiting bodies of the fungus Laetiporus sulphureus var. miniatus. Their structures were established by spectroscopic and chemical methods. The known compounds 3-6 were also obtained and identified as egonol, demethoxyegonol, egonol glucoside and egonol gentiobioside. Some of these compounds exhibited cytotoxicity against Kato III cells.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan.
| | | | | | | | | |
Collapse
|
3
|
Yoshikawa K, Tanaka M, Arihara S, Pal BC, Roy SK, Matsumura E, Katayama S. New oleanene triterpenoid saponins from Madhuca longifolia. J Nat Prod 2000; 63:1679-1681. [PMID: 11141115 DOI: 10.1021/np000351r] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Four new oleanane-type triterpene glycosides, madlongisides A-D (1-4), were isolated from the seeds of Madhuca longifolia, and their structures were elucidated on the basis of extensive NMR experiments and chemical methods. Also obtained in this investigation were the known compounds mimusopside A, Mi-saponins A, B, and C, and 3-O-beta-D-glucopyranosyl protobassic acid.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-Cho, Tokushima 770-8514, Japan.
| | | | | | | | | | | | | |
Collapse
|
4
|
Abstract
Two novel steroids with a cyclopropane ring at C-25 and C-26, 7-oxopetrosterol (1) and 7alpha-hydroxypetrosterol (2), along with two known compounds, petrosterol (3) and 23,24-dihydrocalysterol (4), have been isolated from the Japanese marine sponge Strongylophora corticata. The structures of 1 and 2 were determined as 26, 27-cyclo-24,27-dimethyl-3beta-hydroxycholest-5-en-7-one and 26, 27-cyclo-24,27-dimethylcholest-5-en-3beta,7alpha-diol on the basis of spectroscopic investigations.
Collapse
Affiliation(s)
- A Umeyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan.
| | | | | | | |
Collapse
|
5
|
Abstract
Three cycloartane triterpenes, cyclopassifloic acids E (1), F (2), and G (3), and their saponins, cyclopassiflosides VII (4), VIII (5), IX (6), X (7), and XI (8), were isolated from the leaf and stem parts of Passiflora edulis. The structures of 1-8 were elucidated on the basis of extensive NMR experiments and by chemical methods.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan.
| | | | | | | |
Collapse
|
6
|
Yoshikawa K, Matsumoto K, Mine C, Bando S, Arihara S. Five lanostane triterpenoids and three saponins from the fruit body of Laetiporus versisporus. Chem Pharm Bull (Tokyo) 2000; 48:1418-21. [PMID: 11045442 DOI: 10.1248/cpb.48.1418] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Five lanostane triterpenes, named versisponic acids A-E and three lanostanoid glycosides, laetiposides E-G, were isolated from the fruit bodies of Laetiporus versisporus. Their structures were established by extensive NMR experiments and chemical methods.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmoceutical Sciences, Tokushima Bunri University, Japan.
| | | | | | | | | |
Collapse
|
7
|
Yoshikawa K, Katsuta S, Mizumori J, Arihara S. Four cycloartane triterpenoids and six related saponins from Passiflora edulis. J Nat Prod 2000; 63:1229-1234. [PMID: 11000025 DOI: 10.1021/np000126+] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Four cycloartane triterpenes, cyclopassifloic acids A (1), B (2), C (3), and D (4), and six related saponins, cyclopassiflosides I (5), II (6), III (7), IV (8), V (9), and VI (10), were isolated from the leaves and stems of Passiflora edulis, and their structures were elucidated on the base of extensive NMR experiments and chemical methods. Cyclopassifloic acids A-D were assigned as 22(R), 24(S)-1alpha,3beta,22,24,31-pentahydroxy-24-methylcycloartan -28-oic acid; 24(S)-1alpha,3beta,24, 31-tetrahydroxy-24-methylcycloartan-28-oic acid; 20(S),24(S)-1alpha, 3beta,21,24,31-pentahydroxy-24-methylcycloartan-28-oic acid; and 22(R)-1alpha,3beta,22-trihydroxy-24-oxocycloartan-28-oic acid, respectively. Cyclopassiflosides I-VI, in turn, were established as the 28-O-beta-D-glucopyranosides of cyclopassifloic acids A-D. Finally, cyclopassiflosides III and V were demonstrated as the 28, 31-bis-O-beta-D-glucopyranosides of cyclopassifloic acids B and C, respectively. Also obtained in this investigation were the known compounds passiflorin (11) and passifloric acid (12).
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-Cho, Tokushima 770-8514, Japan.
| | | | | | | |
Collapse
|
8
|
Umeyama A, Adachi K, Ito S, Arihara S. New 24-isopropylcholesterol and 24-isopropenylcholesterol sulfate from the marine sponge Epipolasis species. J Nat Prod 2000; 63:1175-1177. [PMID: 10978223 DOI: 10.1021/np000024j] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two novel steroids, polasterol A (1) and polasterol B sulfate (2), along with two known compounds, 22(E),24-isopropylcholesta-5, 22-dien-3 beta-ol (3) and halistanol sulfate (4), have been isolated from the Japanese marine sponge Epipolasis sp. The structures of 1 and 2 were determined as 3 beta-hydroxy-24-isopropylcholesta-5, 22(E)-dien-7-one and 24xi-isopropenylcholesta-22(Z), 28(29)-diene-2 beta,3 alpha,6 alpha-triyl trisodium sulfate on the basis of spectroscopic investigations and a chemical conversion.
Collapse
Affiliation(s)
- A Umeyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan.
| | | | | | | |
Collapse
|
9
|
Yoshikawa K, Hirai H, Tanaka M, Arihara S. Antisweet natural products. XV. Structures of Jegosaponins A-D from Styrax japonica Sieb. et Zucc. Chem Pharm Bull (Tokyo) 2000; 48:1093-6. [PMID: 10923849 DOI: 10.1248/cpb.48.1093] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
From the fresh fruits of Strrax japonica Sieb. et Zucc., four new triterpenoid glycosides, named jegosaponins A-D (1-4), were isolated. Their structures were determined on the basis of spectroscopic data and chemical evidence. Compounds 1-4 are 3-O-tetraglycosides of barringtogenol C having an acetyl and a tigloyl or a (2Z)-hexenoyl groups at C-21, 22 and 28. The acylated saponins, 1-4, all showed antisweet activity.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty, of Pharmaceutical Sciences, Tokushima Bunri University, Japan.
| | | | | | | |
Collapse
|
10
|
Abstract
Two new polyhydroxylated sterols, dendronesterols A (1) and B (2), have been isolated from the octocoral Dendronephthya gigantea. The structures of 1 and 2 were proposed on the basis of extensive NMR experiments. Compound 2 was found to be weakly cytotoxic toward L1210 cells.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan.
| | | | | | | | | |
Collapse
|
11
|
Abstract
The stem of Stephanotis floribunda afforded a new cyclic pentapeptide stephanotic acid (1), possessing a novel 6-(leucin-3'-yl) tryptophan skeleton. The structure of 1 was assigned on the basis of extensive NMR experiments and a chemical reaction and shown to be closely related to the bicyclic octapeptide moroidin (3), a toxin from Laportea moroides.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan.
| | | | | |
Collapse
|
12
|
Yoshikawa K, Nishino H, Arihara S, Chang HC, Wang JD. Oligosaccharides from Hoya carnosa. J Nat Prod 2000; 63:146-148. [PMID: 10650099 DOI: 10.1021/np990368d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Oligosaccharides A, B, and C (1-3, respectively) were isolated from the stem of Hoya carnosa. Their structures were established by NMR and chemical methods. Compounds 1 and 2 were 6-deoxy-3-O-methyl-beta-allopyranosyl(1-->4)-beta-cymaropyranosyl( 1-- >4)-beta-cymaropyranosyl(1-->4)-beta-cymaronic acid delta-lactone and 6-deoxy-3-O-methyl-beta-allopyranosyl(1-->4)-beta-oleandropyranosyl++ +(1 -->4)-beta-cymaropyranosyl(1-->4)-beta-cymaronic acid delta-lactone, respectively. Compound 3 was the sodium salt of 2.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan.
| | | | | | | | | |
Collapse
|
13
|
Yoshikawa K, Matsuchika K, Takahashi K, Tanaka M, Arihara S, Chang HC, Wang JD. Pregnane glycosides, gymnepregosides G-Q from the roots of Gymnema alternifolium. Chem Pharm Bull (Tokyo) 1999; 47:798-804. [PMID: 10399837 DOI: 10.1248/cpb.47.798] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The structural elucidation of eleven new related polyoxypregnane glycosides, gymnepregosides G (1), H (2), I (3), J (4), K (5), L (6), M (7), N (8), O (9), P (10) and Q (11), from the roots of Gymnema alternifolium (Asclepiadaceae) was achieved by a detailed study of 1H- and 13C-NMR spectral data and chemical means. The results obtained for new compounds, 1-11, show that they are (20S)-pregn-6-ene-3 beta,5 alpha,8 beta,12 beta,14 beta,17 beta,20-heptaol 3-O-glycosides, and all the sugars at C-3 are beta(i-->4)-linked. Some of them possess benzoyl, (E)- and (Z)-cin-namoyl, and tigloyl residues as the ester linkages located at C-12 and/or C-20 of the aglycone.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | | | | | | | |
Collapse
|
14
|
Abstract
Four new lanostanoid glycosides, 3beta, 7alpha-dihydroxy-24-methylene-lanost-8-en-21-oic acid 7-O-beta-D-glucopyranoside (1), 3beta,7alpha-dihydroxy-lanost-8, 24-dien-21-oic acid 7-O-beta-D-glucopyranoside (2), 7alpha-hydroxy-3-keto-lanost-8,24-dien-21-oic acid 7-O-beta-D-glucopyranoside (3), and 7alpha-hydroxy-3-keto-24-methylene-lanost-8-en-21-oic acid 7-O-beta-D-glucopyranoside (4) were isolated from the fruit bodies of Laetiporus versisporus. Compounds 1-4 were named laetiposides A-D, respectively. Their structures were established by extensive NMR experiments and chemical methods.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan
| | | | | |
Collapse
|
15
|
Umeyama A, Machida M, Nozaki M, Arihara S. Peroxypolasol and mugipolasol: two novel diterpenes from the marine sponge epipolasis sp. J Nat Prod 1998; 61:1435-1436. [PMID: 9834175 DOI: 10.1021/np980210d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Two novel diterpenes, peroxypolasol (1) and mugipolasol (2), have been isolated from the Japanese marine sponge Epipolasis sp. The structures of 1 and 2 were determined on the basis of spectroscopic data. Compound 1 is a diterpene with a peroxide ring in the side chain, and 2 is an unusual six/five-membered ring diterpene with an ethyl unit at C-2.
Collapse
Affiliation(s)
- A Umeyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770, Japan
| | | | | | | |
Collapse
|
16
|
Umeyama A, Ito S, Yuasa E, Arihara S, Yamada T. A new bromopyrrole alkaloid and the optical resolution of the racemate from the marine sponge homaxinella sp. J Nat Prod 1998; 61:1433-1434. [PMID: 9834174 DOI: 10.1021/np980207u] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A new bromopyrrole alkaloid (1) along with (+/-)-2 and (+/-)-longamide (3) has been isolated from the Japanese marine sponge Homaxinella sp. The structures of the compounds were proposed on the basis of spectroscopic data. The optical resolution of (+/-)-2 by chiral HPLC was successful and afforded the two enantiomers, (+)-2 and (-)-2.
Collapse
Affiliation(s)
- A Umeyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770, Japan, and Osaka University of Pharmaceutical Sciences 4-20-1, Nasahara, Takatsuki, Osaka 569-1041, Japan
| | | | | | | | | |
Collapse
|
17
|
Yoshikawa K, Mimura N, Arihara S. Isolation and absolute structures of enantiomeric 1,2-bis(4-hydroxy-3-methoxyphenyl)-1,3-propanediol 1-O-glucosides from the bark of Hovenia trichocarpa. J Nat Prod 1998; 61:1137-1139. [PMID: 9748383 DOI: 10.1021/np980003d] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Two 1,2-bis(4-hydroxy-3-methoxyphenyl)-1,3-propanediol 1-O-glucosides, hovetrichosides A (1) and B (2), were isolated from the bark of Hovenia trichocarpa. Their structures were established by extensive NMR experiments and chemical methods. Compounds 1 and 2 were (1R), (2S)-1-(4-hydroxy-3-methoxyphenyl)-2-(4-hydroxy-3-methoxyphenyl)-1, 3-propanediol 1-O-beta-D-glucopyranoside and (1S), (2R)-1-(4-hydroxy-3-methoxyphenyl)-2-(4-hydroxy-3-methoxyphenyl)-1, 3-propanediol 1-O-beta-D-glucopyranoside, respectively.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan.
| | | | | |
Collapse
|
18
|
Yoshikawa K, Matsuchika K, Arihara S, Chang HC, Wang JD. Pregnane glycosides, gymnepregosides A-F from the roots of Gymnema alternifolium. Chem Pharm Bull (Tokyo) 1998; 46:1239-43. [PMID: 9734311 DOI: 10.1248/cpb.46.1239] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The structural elucidation of six new related polyoxypregnane glycosides, gymnepregosides A (1), B (2), C (3), D (4), E (5) and F (6), together with two known compounds, from the roots of Gymnema alternifolium (Asclepiadaceae) was achieved through on a detailed study of 1H- and 13C-NMR spectral data and chemical means. The results obtained for new compounds, 1-6, show that they are (20S)-pregn-6-ene-3 beta,5 alpha,8 beta,12 beta,14 beta,17 beta,20-heptaol or sarcostin 3-O-glycosides, and all the sugars at C-3 are beta(1-->4)-linked. Some of them possessed benzoyl, cinnamoyl and tigloyl residues as the ester linkages located at C-12 and/or C-20 of the aglycon.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan
| | | | | | | | | |
Collapse
|
19
|
Abstract
Three new diterpenes, polasols A-C (1-3), have been isolated from the Japanese marine sponge Epipolasis sp. The structures of 1-3 were assigned primarily by 2D NMR methods.
Collapse
Affiliation(s)
- A Umeyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770, Japan
| | | | | |
Collapse
|
20
|
Yoshikawa K, Eiko K, Mimura N, Kondo Y, Arihara S. Hovetrichosides C-G, five new glycosides of two auronols, two neolignans, and a phenylpropanoid from the bark of Hovenia trichocarea. J Nat Prod 1998; 61:786-790. [PMID: 9644065 DOI: 10.1021/np9800396] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Two 2-hydroxy-2-benzylcoumaranone glycosides, 2,4, 6-trihydroxy-2-[(4'-hydroxyphenyl) methyl]-3(2H)-benzofuranone-4-yl-beta-D-glucopyranoside (maesopsin 4-O-glucoside) (1) and 2,4,6-trihydroxy-2-[(4'-hydroxyphenyl) methyl]-3(2H)-benzofuranone-4-yl-beta-D-glucopyranosido-4'-y l-alpha-L -rhamnopyranoside (maesopsin 4-O-glucosido 4'-O-rhamnoside) (2), two neolignan glycosides, 2R-(E)-2, 3-dihydro-2-(4'-hydroxy-3'-methoxylphenyl)-5-(3"-hydroxy-1"-pro pen yl) -7-methoxy-3-benzofuranmethanol-4'-yl-beta-D-glucopyranosyl-(1-->3 )-[ beta-D-glucopyranosyl-(l-->2)]-beta-d-glucopyranoside (3) and (threo) 1-(4'-hydroxy-3'-methoxy)-2-(4"-hydroxymethyl-2", 6"-dimethoxyphenoxy)-propane-1,3-diol-4'-yl-beta-d-glucopynosid e (4), and a phenylpropanoid glycoside, 3-methoxy-5-(2'-propenyl)-1, 2-benzenediol-1-yl-beta-D-apiofuranosyl-(1-->6)-beta-D- glucopyransodie (5) were isolated from the bark of Hovenia trichocarea. Compounds 1-5 were named hovetricosides C-G, respectively, and their structures were established by extensive NMR experiments and chemical methods. Also obtained in this investigation were the known compounds acanthoside B, kelampayoside A, shashenoside I, and 3,4, 5-trimethoxyphenol-1-O-beta-D-xylopyranosyl-(1-->6)-beta-D- glucopyranoside.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-Cho, Tokushima 770-8514, Japan
| | | | | | | | | |
Collapse
|
21
|
Abstract
Four new oleanane-type triterpene glycosides, proceraosides A-D (1-4), were isolated from the seeds of Albizia procera. Their structures were established by extensive NMR experiments and chemical methods. Compounds 1-3 comprised acacic acid as the aglycon and a monoterpenic carboxylic acid linked to a monoterpene quinovoside as the acyl moiety at C-21. The common oligosaccharide moiety linked to C-28 in 1-3 was determined as alpha-l-arabino- furanosyl-(1-->4)-[beta-D-glucopyranosyl-(1-->3)]-alpha-L-rhamnopyranosy l- (1-->2)-beta-D-glucopyranosyl ester. These compounds differed in the C-3-linked sugar unit or in the configuration of C-6' of the inner monoterpene moiety in the C-21-linked acyl unit. Compound 4 was established as the 16-deoxy analogue of 1.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | | | | | |
Collapse
|
22
|
Yoshikawa K, Suzaki Y, Tanaka M, Arihara S, Nigam SK. Three acylated saponins and a related compound from Pithecellobium dulce. J Nat Prod 1997; 60:1269-1274. [PMID: 9428160 DOI: 10.1021/np9703555] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Four new oleanane-type triterpene glycosides, pithedulosides H-K (1-4), were isolated from the seeds of Pithecellobium dulce. Their structures were established by extensive NMR experiments and chemical methods. Compounds 1-3 comprised acacic acid as the aglycon and either monoterpene carboxylic acid and its xyloside or monoterpene carboxylic acid as the acyl moiety at C-21. The oligosaccharide moieties linked to C-3 and C-28 were determined as alpha-L-arabinopyranosyl-(1-->2)-alpha-L-arabinopyranosyl-(1 -->6)- [beta-D-glucopyranosyl-(1-->2)]-beta-D-glucopyranosyl and alpha-L-arabinofuranosyl-(1-->4)-[beta-D-glucopyranosyl-(1-->3)]-alpha- rhamnopyranosyl-(1-->2)-beta-D-glucopyranosyl ester, respectively. Compound 4 was established as an echinocystic acid 3-O-glycoside having the same sugar sequences as 1-3. Also obtained in this investigation was the known compound 5, which was identified as echinocystic acid 3-O-beta-D-xylopyranosyl- (1-->2)-alpha-L-arabinopyranosyl-(1-->6)-[beta-D-glucopyranosyl-(1 -->2)]- beta-D-glucopyranoside.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | | | |
Collapse
|
23
|
Abstract
Seven saponins named pithedulosides A-G were isolated from the seeds of Pithecellobium dulce. Their structures were established through spectral analyses as echinocystic acid 3-O-alpha-L-arabinopyranosyl-(1-->6)-beta-D-glucopyranoside, echinocystic acid and oleanolic acid 3-O-alpha-L-arabinopyranosyl- (1-->2)-alpha-L-arabinopyranosyl-(1-->6)-beta-D-glucopyranosides and 3-O-beta-D-xylopyranosyl-(1-->2)-alpha-L-arabinopyranosyl -(1-->6)-beta-D-glucopyranosides, oleanolic acid 3-O-alpha-L-arabinopyranosy-(1-->2)-alpha-L- arabinopyranosyl-(1-->6)-[beta-D-glucopyranosyl-(1-->2)]-beta- D-glucopyranoside, and 3-O-beta-D-xylopyranosyl-(1-->2)-alpha-L-arabinopyranosyl-(1-->6) -[beta-D-glucopyranosyl-(1-->2)]--beta-D-glucopyranoside.
Collapse
Affiliation(s)
- S K Nigam
- Upgraded Department of Pharmacology and Therapeutics, K. G's Medical College, Lucknow, India
| | | | | | | | | | | |
Collapse
|
24
|
Yoshikawa K, Mizutani A, Kan Y, Arihara S. Antisweet natural products. XII. Structures of sitakisosides XI-XX from Stephanotis lutchuensis Koidz. var. japonica. Chem Pharm Bull (Tokyo) 1997; 45:62-7. [PMID: 9023968 DOI: 10.1248/cpb.45.62] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
From the fresh stem of Stephanotis lutchuensis var. japonica, ten new oleanane-type triterpenoid glycosides, named sitakisosides XI-XX (1-10), were isolated. Their structures were determined on the basis of spectroscopic data and chemical evidence. The results show that all have a 3-O-beta-D-xylopyranosyl(1 --> 6)-beta-D-glucopyranosyl(1 --> 6)- beta-D-glucopyranosyl moiety and the aglycones of sitakisosides XI-XV, XVI and XVII, XVIII and XIX, and XX are sitakisogenin, chichipegenin, marsglobiferin and longispinogenin, respectively. Sitakisosides XI-XIII, XVI and XVIII, having an acyl group, showed antisweet activity.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | |
Collapse
|
25
|
Yoshikawa K, Okada N, Kan Y, Arihara S. Steroidal glycosides from the fresh stem of Stephanotis lutchuensis var. japonica (Asclepiadaceae). Chemical structures of stephanosides K-Q. Chem Pharm Bull (Tokyo) 1996; 44:2243-8. [PMID: 8996855 DOI: 10.1248/cpb.44.2243] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The structural elucidation of seven related oxypregnane-oligoglycosides stephanosides K (1), L (2), M (3), N (4), O (5), P (6), and Q (7) from the fresh stem of Stephanotis lutchuensis var. japonica (Asclepiadaceae) was achieved through on a detailed study of their high-field 1H- and 13C-NMR spectra. The results show that all the sugars are beta (1-->4)-linked. The aglycones of stephanosides K, M, and O, and stephanosides L, N, and P were identified as 12-O-cinnamoyl-20-O-(E)-2-methyl-2-butenoyl, and 12-O-cinnamoyl-20-O-nicotinoyl derivatives of (20S)-pregn-6-ene-3 beta,5 alpha,8 beta,12 beta,14 beta,17 beta,20-heptaol, respectively. The aglycone of stephanoside Q was 12-O-cinnamoyldeacetylmetaplexigenin (kidjoranin).
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | |
Collapse
|
26
|
Abstract
Three main saponins named albiziasaponins A, B, and C were isolated from the barks of Albizia lebbeck. Their structures were established through spectral analyses as acacic acid lactone 3-O-beta-D-xylopyranosyl-(1-->2)-alpha-L-arabinopyranosyl-(1-->6)- beta-D-glucopyranoside, 3-O-beta-D-glucopyranosyl-(1-->2)-O-[alpha-L-arabinopyranosyl-(1-- >6)]- beta-D-glucopyranoside and 3-O-beta-D-xylopyranosyl-(1-->2)-alpha-L-arabinopyranosyl-(1-->6)- O- [beta-D-glucopyranosyl-(1-->2)]-beta-D-glucopyranoside.
Collapse
Affiliation(s)
- B C Pal
- Indian Institute of Chemical Biology, Calcutta
| | | | | | | |
Collapse
|
27
|
Takei M, Umeyama A, Shoji N, Arihara S, Endo K. Mechanism of inhibition of IgE-dependent histamine release from rat mast cells by penasterol and penasterone. J Pharm Sci 1995; 84:228-30. [PMID: 7537812 DOI: 10.1002/jps.2600840222] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Penasterol and penasterone, constituents of the Okinawan marine sponge Penares incrustans, dose-dependently inhibited anti-IgE-induced histamine release from rat mast cells. The concentrations of penasterol and penasterone required for 50% inhibition of anti-IgE-induced histamine release (IC50) were 0.5 and 1.5 microM, respectively. Both compounds dose-dependently inhibited phospholipase A2 (PLA2) activity. Moreover, they inhibited anti-IgE-induced [3H]arachidonic acid from rat mast cells. These results suggest that the mechanism of inhibition by these compounds of the histamine release induced by anti-IgE was through the inhibition of PLA2.
Collapse
Affiliation(s)
- M Takei
- Forschungsinstitut Borstel, Germany
| | | | | | | | | |
Collapse
|
28
|
Yoshikawa K, Taninaka H, Kan Y, Arihara S. Antisweet natural products. XI. Structures of sitakisosides VI-X from Stephanotis lutchuensis Koidz. var. japonica. Chem Pharm Bull (Tokyo) 1994; 42:2455-60. [PMID: 7697761 DOI: 10.1248/cpb.42.2455] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
From the fresh stem of Stephanotis lutchuensis var. japonica, five new oleanane-type triterpenoid glycosides named sitakisosides VI-X (1-5) were isolated. Their structures were determined on the basis of spectroscopic data and chemical evidence. Sitakisosides VI and VII are 3-O-beta-D-xylopyranosyl(1-->6)-beta-D-glucopyranosyl(1-->6)-beta-D- glucopyranosido-21-O-(6-N-methylanthranilyl)-beta-D-glucopyr anosyl and 3-O-beta-D-xylopyranosyl(1-->6)-beta-D-glucopyranosyl(1-->6)-beta-D- glucopyranosido-21-O-(4-N-methylanthranilyl)-beta-D-glucopyr anosyl sitakisogenin, respectively. Sitakisoside VIII is 3-O-beta-D-xylopyranosyl(1-->6)-beta-D- glucopyranosyl(1-->6)-beta-D-glucopyranosido-21-O-N-methylanthr anilyl- 3 beta,16 beta,21 beta,28-tetrahydroxyolean-12-ene-22-one. Sitakisoside IX is 3-O-beta-D-xylopyranosyl(1-->6)-beta-D-glucopyranosyl(1-->6)-beta-D- glucopyranosido-21-O-(6-N-methylanthranilyl)-beta-D-glucopyr anosyl gymnestrogenin. Sitakisoside X is 3-O-beta-D-xylopyranosyl(1-->6)-beta-D- glucopyranosyl(1-->6)-beta-D-glucopyranosyl longispinogenin.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | |
Collapse
|
29
|
Abstract
From the seeds of Impatiens balsamina have been isolated four rare baccharane glycosides, hosenkosides L-O. The structures of all isolates were secured by the use of 2D NMR techniques (1H-1H COSY, HMQC, HMBC, ROESY) and chemical derivatization. Hosenkosides L and M are hosenkol A 3-O-sambubiosyl-28-O-glucoside and 3-O-sambubiosyl-26-O-glucosyl-28-O-glucoside, respectively. Hosenkoside N is hosenkol C 3-O-glucosyl-28-O-glucoside. Hosenkoside O is hosenkol D 3-O-sophorosyl-28-O-glucoside.
Collapse
Affiliation(s)
- N Shoji
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | | | |
Collapse
|
30
|
Abstract
From the herb of Anagallis arvensis, we have isolated four novel oleanane glycosides, anagallosaponins VI-IX, and two artifact saponins, apoanagallosaponins III and IV, formed from anagallosaponins III and IV. The structures were elucidated by chemical and spectral methods, 2D NMR techniques being particularly helpful. The structures of anagallosaponins VI and VII were characterized as priverogenin B 3-O-beta-D-xylopyranosyl (1-->2)-beta-D-glucopyranosyl (1-->4)-alpha-L-arabinopyranoside and 3-O-(beta-D-glucopyranosyl (1-->4)-[beta-D-xylopyranosyl (1-->2)]beta-D-glucopyranosyl (1-->4)-alpha-L-arabinopyranoside), respectively. The structures of anagallosaponins VIII and IX were characterized as 23-hydroxypriverogenin B 22-acetate 3-O-(beta-D-xylopyranosyl (1-->2)-O-beta-D-glucopyranosyl (1-->4)[beta-D-glucopyranosyl (1-->2)]-alpha-L-arabinopyranoside), 3-O-(beta-D-glucopyranosyl (1-->4)-[beta-D-xylopyranosyl (1-->2)]beta-D-glucopyranosyl (1-->4)[beta-D-glucopyranosyl (1-->2)]- alpha-L-arabinopyranoside), respectively. The structures of apoanagallosaponins III and IV were characterized as camelliagenin A 16-acetate 3-O-beta-D-xylopyranosyl (1-->2)-beta-D-glucopyranosyl (1-->4)-alpha-L-arabnopyranoside, 3-O-(beta-D-xylopyranosyl (1-->2)-O-beta-D-glucopyranosyl (1-->4)[beta-D-glucopyranosyl (1-->2)]-alpha-L-arabinopyranoside), respectively.
Collapse
Affiliation(s)
- N Shoji
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | |
Collapse
|
31
|
Yoshikawa K, Taninaka H, Kan Y, Arihara S. Antisweet natural products. X. Structures of sitakisosides I-V from Stephanotis lutchuensis Koidz. var. japonica. Chem Pharm Bull (Tokyo) 1994; 42:2023-7. [PMID: 7805126 DOI: 10.1248/cpb.42.2023] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
From the fresh stem of Stephanotis lutchuensis var. japonica, we have isolated five new oleane glycosides named sitakisosides I-V (1-5). Their structures were determined on the basis of spectroscopic data and chemical evidence. Sitakisoside V showed the strongest antisweet activity among sitakisosides I-V.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | |
Collapse
|
32
|
Shoji N, Umeyama A, Yoshikawa K, Arihara S. Structures of anagallosaponins I-V and their companion substances from Anagallis arvensis L. Chem Pharm Bull (Tokyo) 1994; 42:1750-5. [PMID: 7954927 DOI: 10.1248/cpb.42.1750] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
From the herb of Anagallis arvensis L., we have isolated five novel oleanane glycosides, anagallosaponins I-V and the artifact, methyl anagallosaponin I, besides anagallosides A, B, C, and desglucoanagallosides A and B. The structures of isolates were identified by the use of 2D-NMR techniques (1H-1H correlation spectroscopy (COSY), 1H-detected heteronuclear multiple quantum coherence (HMQC), heteronuclear multiple quantum coherence (HMBC), rotating frame Overhauser enhancement spectroscopy (ROESY), total correlation spectroscopy (TOCSY). The structures of anagallosaponins I and II were characterized as anagallogenin A. 3-O-(beta-D-glucopyranosyl (1-->4)-[beta-D-xylopyranosyl (1-->2)-] beta-D-glucopyranosyl (1-->4)- [beta-D-glucopyranosyl (1-->2)]-alpha-L-arabinopyranoside) and anagallogein A 22-acetate 3-O-(beta-D-xylopyranosyl (1-->2)-O-beta-D- glucopyranosyl (1-->4)-[beta-D-glucopyranosyl (1-->2)]-alpha-L-arabinopyranoside), respectively. The structures of anagallosaponins III, IV and V were characterized as priverogenin B 22-acetate 3-O-beta-D-xylopyranosyl (1-->2)-beta-D-glucopyranosyl (1-->4)-alpha-L-arabinopyranoside, 3-O-(beta-D-xylopyranosyl (1-->2)-beta-D-glucopyranosyl (1-->4)-[beta-D-glucopyranosyl (1-->2)]-alpha-L-arabinopyranoside), 3-O-(beta-D-glucopyranosyl (1-->4)-[beta-D-xylopyranosyl (1-->2)]-beta-D-glucopyranosyl (1-->4)-alpha-L-arabinopyranoside), respectively. Methyl anagallosaponin I, the methylacetal of anagallosaponin I might be derived from anagallosaponin I during the isolation procedure.
Collapse
Affiliation(s)
- N Shoji
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | |
Collapse
|
33
|
Shoji N, Umeyama A, Saitou N, Yoshikawa K, Nagai M, Arihara S. Hosenkosides F, G, H, I, J, and K, novel baccharane glycosides from the seeds of Impatiens balsamina. Chem Pharm Bull (Tokyo) 1994; 42:1422-6. [PMID: 7923465 DOI: 10.1248/cpb.42.1422] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
From the seeds of Impatiens balsamina we have isolated six novel baccharane glycosides, hosenkosides F-K. The structures of all isolates were determined by the use of two dimensional (2D) NMR techniques (1H-1H correlation spectroscopy (COSY), heteronuclear multiple quantum coherence (HMQC), heteronuclear multiple-bond correlation (HMBC), rotating frame Overhauser enhancement spectroscopy (ROESY), total correlation spectroscopy (TOCSY)) and chemical derivatization. Hosenkosides F, H and I are hosenkol B 3-O-sambubiosido-26-O-glucoside, 3-O-sambubioside and 3,26-O-diglucoside, respectively. Hosenkoside G is hosenkol C 3-O-sambubiosido-28-O-glucoside. Hosenkosides J and K are hosenkol A 3-O-sophoroside and 3-O-sophorosido-26-O-glucosyl-28-O-glucoside, respectively.
Collapse
Affiliation(s)
- N Shoji
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | | | | | |
Collapse
|
34
|
Shoji N, Umeyama A, Takei M, Arihara S. Potent inhibitors of histamine release: polyhydroxylated sterols from the Okinawan soft coral Sinularia abrupta. J Pharm Sci 1994; 83:761-2. [PMID: 7520938 DOI: 10.1002/jps.2600830534] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A new polyhydroxylated steroid (24-methylene-1 alpha, 3 beta, 11 alpha-trihydroxycholest-5-ene-18-oic acid-3-acetate, 1) and known related compounds (2-4) from the soft coral Sinularia abrupta have potently inhibited histamine release from rat peritoneal mast cells induced by anti-immunoglobulin E. The inhibitory effect of 1 was approximately 6500 times stronger than that of disodium cromoglycate, a well-known antiallergic drug.
Collapse
Affiliation(s)
- N Shoji
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | |
Collapse
|
35
|
Abstract
Three monodesmosidic glucuronide saponins of barringtogenol C, named barringtosides A, B and C have been isolated as their methyl esters from the dried seeds of Barringtonia acutangula. On the basis of chemical and spectral evidence, the structures of these new saponins were elucidated to be as follows: barringtoside A, 3-O-beta-D-xylopyranosyl(1-->3)-[beta-D-galactopyranosyl(1-->2)]-beta-D- glucuronopyranosyl barringtogenol C; barringtoside B, 3-O-beta-D-xylopyranosyl(1-->3)-]beta-D-galactopyranosyl(1-->2)]-beta-D- glucuronopyranosyl-21-O-tigloyl-28-O-isobutyryl barringtogenol C; barringtoside C, 3-O-alpha-L-arabinopyranosyl(1-->3)-[beta-D-galactopyranosyl(1-->2 )]-beta-D - glucuronopyranosyl barringtogenol C.
Collapse
Affiliation(s)
- B C Pal
- Indian Institute of Chemical Biology, Calcutta
| | | | | | | |
Collapse
|
36
|
Abstract
From the fresh leaves of Hovenia dulsis var. tomentella, two new aroma glycosides named kenposide A and B have been isolated together with the known glycoside, icariside C1. Their structures were determined on the basis of chemical and spectral evidence.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | |
Collapse
|
37
|
Yoshikawa K, Nagai Y, Yoshida M, Arihara S. Antisweet natural products. VIII. Structures of hodulosides VI--X from Hovenia dulcis Thunb. var. tomentella Makino. Chem Pharm Bull (Tokyo) 1993; 41:1722-5. [PMID: 8281570 DOI: 10.1248/cpb.41.1722] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
From the Fresh leaves of Hovenia dulcis Thunb. var. tomentella Makino, five five new dammarane glycosides named hodulosides VI-X (1-5) were isolated. Their structures were determined on the basis of chemical and spectral evidence. Hodulosides VII-X showed antisweet activities.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | |
Collapse
|
38
|
Takei M, Umeyama A, Shoji N, Arihara S, Endo K. Mechanism of inhibition of IgE-dependent histamine release from rat mast cells by xestobergsterol A from the Okinawan marine sponge Xestospongia bergquistia. Experientia 1993; 49:145-9. [PMID: 7680004 DOI: 10.1007/bf01989419] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Histamine release from rat peritoneal mast cells induced by anti-IgE was essentially complete within 4-5 min. Xestobergsterol A and B, which are constituents of the Okinawan marine sponge Xestospongia bergquistia Fromont, dose-dependently inhibited anti-IgE-induced histamine release from rat mast cells. The IC50 values of xestobergsterol A and B for histamine release in mast cells activated by anti-IgE were 0.07 and 0.11 microM, respectively. Anti-IgE stimulated PI-PLC activity in a mast cell membrane preparation. Xestobergsterol A dose-dependently inhibited the generation of IP3 and membrane-bound PI-PLC activity. Moreover, xestobergsterol A inhibited Ca(2+)-mobilization from intracellular Ca(2+)-stores as well as histamine release in mast cells activated by anti-IgE. On the other hand, xestobergsterol B did not inhibit the membrane-bound and cytosolic PI-PLC activity, IP3 generation or the initial rise in [Ca2+]i in mast cells activated by anti-IgE. These results suggest that the mechanism of inhibition by xestobergsterol A of the initial rise in [Ca2+]i, of the generation of IP3, and of histamine release induced by anti-IgE, was through the inhibition of PI-PLC activity.
Collapse
Affiliation(s)
- M Takei
- La Jolla Institute for Allergy and Immunology, California 92037
| | | | | | | | | |
Collapse
|
39
|
Umeyama A, Shoji N, Takei M, Endo K, Arihara S. Ciwujianosides D1 and C1: powerful inhibitors of histamine release induced by anti-immunoglobulin E from rat peritoneal mast cells. J Pharm Sci 1992; 81:661-2. [PMID: 1383492 DOI: 10.1002/jps.2600810714] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In rat peritoneal mast cells induced by anti-immunoglobulin E, ciwujianosides D1 (1) and C1 (2) from Acanthopanax senticosus (ciwujia) strongly inhibited histamine release in a concentration-dependent manner. The inhibitory effect of 1 was approximately 6800 times stronger than that of disodium cromoglycate.
Collapse
Affiliation(s)
- A Umeyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan
| | | | | | | | | |
Collapse
|
40
|
Shoji N, Umeyama A, Kishi K, Arihara S, Ohizumi Y, Kobayashi J. Untenic Acid, a Novel Ca2+-ATPase Activator From an Okinawan Marine Sponge. Aust J Chem 1992. [DOI: 10.1071/ch9920793] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A novel furanoterpene, untenic acid (1), which activates sarcoplasmic reticulum Ca2+-ATPase, has been isolated from an Okinawan marine sponge of the Spongiidae family, and characterized on the basis of spectroscopic data.
Collapse
|
41
|
Yoshikawa K, Arihara S, Wang JD, Narui T, Okuyama T. Structures of two new fibrinolytic saponins from the seed of Luffa cylindrica Roem. Chem Pharm Bull (Tokyo) 1991; 39:1185-8. [PMID: 1913996 DOI: 10.1248/cpb.39.1185] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Two new fibrinolytic saponins, lucyosides N and P, were isolated from the seeds of Luffa cylindrica Roem. (Cucurbitaceae). On the basis of chemical and spectral evidence, lucyoside N was characterized as 3-O-beta-D-galactopyranosyl-(1----2)-beta-D-glucuronopyranosyl-28- O-beta-D-xylopyranosyl-(1----4)-[beta-D-glucopyranosyl-(1----3)]-alpha-L -rhamnopyranosyl-(1----2)-alpha-arabinopyranosyl quillaic acid. Lucyoside P was characterized as a gypsogenin glycoside with the same sugar moiety as lucyoside N.
Collapse
Affiliation(s)
- K Yoshikawa
- Faculty of Pharmaceutical Sciences, Tokushima-Bunri University, Tokushima, Japan
| | | | | | | | | |
Collapse
|
42
|
Affiliation(s)
- D M Xu
- Institute of Traditional Chinese Medicine and Materia Medica of Jinlin Province, Chang Chun, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
43
|
Umeyama A, Shoji N, Arihara S, Ohizumi Y, Kobayashi J. Untenospongin A and B, Novel Furanoterpenes With Coronary Vasodilating Activity From the Okinawan Marine Sponge Hippospongia sp. Aust J Chem 1989. [DOI: 10.1071/ch9890459] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
New furanoterpenes, untenospongins A and B, have been isolated from the Okinawan marine sponge Hippospongia sp. as potent coronary vasodilating agents, and their structures elucidated to be (E,E)-1,11-bis(furan-3-yl)-4,8-dimethylundeca-7,10-diene-4,6-diol (1) and (E,E,E)- l,ll -bis(furan-3-yl)-4,8-dimethylundeca-l,4,8-trien-6-ol (2) on the basis of spectral data.
Collapse
|
44
|
Taniguchi S, Miyashita Y, Ueyama T, Haze K, Hirase J, Takemoto T, Arihara S, Yoshikawa K. [A hypotensive constituent in hot water extracts of green tea]. YAKUGAKU ZASSHI 1988; 108:77-81. [PMID: 3385611 DOI: 10.1248/yakushi1947.108.1_77] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
45
|
Takemoto T, Arihara S, Yoshikawa K, Kusumoto K, Yano I, Hayashi T. [Studies on the constituents of Cucurbitaceae plants. VI. On the saponin constituents of Luffa cylindrica Roem. (1)]. YAKUGAKU ZASSHI 1984; 104:246-55. [PMID: 6470933 DOI: 10.1248/yakushi1947.104.3_246] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
46
|
|
47
|
|
48
|
|
49
|
Hikino H, Mohri K, Hikino Y, Arihara S, Takemoto T, Mori H, Shibata K. Inokosterone, an insect metamorphosing substance from Achyranthes fauriei. Tetrahedron 1976. [DOI: 10.1016/0040-4020(76)80160-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
50
|
Hikino H, Okuyama T, Arihara S, Hikino Y, Takemoto T. Shidasterone, an insect metamorphosing substance from Blechnum niponicum: structure. Chem Pharm Bull (Tokyo) 1975; 23:1458-79. [PMID: 1182886 DOI: 10.1248/cpb.23.1458] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|