Results 111 to 120 of about 6,756,425 (141)

Drimane-type sesquiterpenoids from the liverwort Diplophyllum serrulatum

Phytochemistry, 1994
Abstract The liverwort, Diplophyllum serrulatum afforded three new drimane-type sesquiterpenoids albicanic acid, albicanal and isoalbicanal, in addition to (+)-albicanol, (−)-drimenol, (+)-trans-γ-monocyclofarnesol, ent-spathulenol and anastreptene. Their structures were established by chemical and spectral means.
Masao Toyota, Yasushi Ooiso, Tatsuya Kusuyama, Yoshinori Asakawa   +3 more
openaire   +1 more source

Drimane-type sesquiterpenoids from Cryptoporus volvatus infected by Paecilomyces varioti

Phytochemistry, 1993
Abstract Three simple drimane-type sesquiterpenoids and two drimane sesquiterpenic ethers of isocitric acid were isolated from Cryptoporus volvatus infected by the fungus Paecylomyces varioti . The ether bond of cryptoporic acids obtained from fresh C. volvatus , were cleaved by P. varioti to give simple drimane sesquiterpenoids.
Hironobu Takahashi, Masao Toyota, Yoshinori Asakawa   +2 more
openaire   +2 more sources

Drimane-type sesquiterpenoids from the liverwort Makinoa crispata

Phytochemistry, 1989
Abstract Three new drimane-type sesquiterpenoids, 7α-chloro-6β-hydroxyconfertifoline, 6β,7α-dihydroxyconfertifoline and 6β,7β-epoxyconfertifoline were isolated from the liverwort Makinoa crispata together with the previously known eudesmane-type sesquiterpene lactone, crispatanolide and a sacculatane-type diterpene dialdehyde, perrottetianal A.
Toshihiro Hashimoto, Motoo Tori, Yoshinori Asakawa   +2 more
openaire   +1 more source

Drimane-type sesquiterpenoids from cultures of the fungus Xylaria polymorpha

Phytochemistry Letters, 2017
Abstract Three new drimane-type sesquiterpenoids named xylariaines A–C (1–3), together with one known analogue (4), were isolated from the ethyl acetate extract of cultures of the fungus Xylaria polymorpha (Pers.: Fr.) Grer. Their structures were elucidated unambiguously by NMR and single-crystal X-ray diffraction analysis.
Ning Ning Yang, Fan Dong Kong, Qing Yun Ma, Sheng Zhuo Huang, Du Qiang Luo, Li Man Zhou, Hao Fu Dai, Zhi Fang Yu, You Xing Zhao   +8 more
openaire   +1 more source

Total Syntheses of Drimane-Type Sesquiterpenoids Enabled by a Gold-Catalyzed Tandem Reaction

Journal of the American Chemical Society, 2011
Development of a gold-catalyzed tandem reaction of 1,7-diynes with both internal and external nucleophiles was realized, which constructed five chemical bonds, two rings, and two stereogenic centers in a single step. Based on the novel cascade transformation, we achieved a unified strategy toward the stereoselective total syntheses of C-15 oxygenated ...
Hang, Shi, Lichao, Fang, Ceheng, Tan, Lili, Shi, Weibin, Zhang, Chuang-chuang, Li, Tuoping, Luo, Zhen, Yang   +7 more
openaire   +2 more sources

A potent cytotoxic warburganal and related drimane-type sesquiterpenoids from Polygonum hydropiper

Phytochemistry, 1980
Abstract Warburganal, a drimane-type sesquiterpene dialdehyde which has potent cytotoxic, antifeedant, antibiotic and molluscicidal activities was isolated ...
Yoshiyasu Fukuyama, Tsuneo Sato, Yoshinori Asakawa, Tsunematsu Takemoto   +3 more
openaire   +1 more source

Total synthesis of (±)-karatavic acid: Structure confirmation of the first seco-drimane type sesquiterpenoid

Tetrahedron Letters, 1984
Abstract One of the postulated structures of karatavic acid is confirmed via the total synthesis by means of the mercury(II) triflate/amine complex-induced olefin cyclization and subsequent short step transformations. Stereochemistry of this new class of natural product is also established.
Mugio Nishizawa, Hideyuki Takenaka, Yuji Hayashi   +2 more
openaire   +1 more source

Total Synthesis Of Biologically Intriguing Drimane-Type Sesquiterpenoids Via Intramolecular Diels–Alder Approaches

ChemInform, 2003
ABSTRACT The total syntheses of three drimane-type sesquiterpenoids, (–)-mniopetal E, (–)-mniopetal F, and (–)-kuehneromycin A, are described. These natural products inhibit the enzymatic activity of RNA-directed DNA-polymerases (reverse transcriptases) of the human immunodeficiency virus (HIV)-1.
Yoshikazu Suzuki, Ken‐Ichi Takao, Kin‐Ichi Tadano   +2 more
openaire   +2 more sources

Three new drimane-type sesquiterpenoids, chaetothyrins A–C, from an endolichenic fungus Chaetothyriales sp.

Journal of Asian Natural Products Research, 2016
Three new drimane-type sesquiterpenoids chaetothyrins A-C (1-3), were isolated from an endolichenic fungus Chaetothyriales sp. (4341B). Their structures were determined by analysis of MS and NMR data as well as single-crystal X-ray diffraction analysis.
Yan-Hui, Zhou, Xiao-Bin, Li, Jiao-Zhen, Zhang, Lin, Li, Ming, Zhang, Wen-Qiang, Chang, Xiao-Ning, Wang, Hong-Xiang, Lou   +7 more
openaire   +2 more sources

Cadinane- and drimane-type sesquiterpenoids produced by Paecilomyces sp. TE-540, an endophyte from Nicotiana tabacum L., are acetylcholinesterase inhibitors

Bioorganic Chemistry, 2020
Sesquiterpenoids with diverse skeleton types are regarded as potential lead compounds in pharmacological and other applications. Herein, we report the discovery of two new cadinane-type sesquiterpenoids, paecilacadinol A (1) and B (2); two new drimane-type sesquiterpenoids, ustusol D (3) and ustusol E (4); and six known analogs (5-10) from the ...
Kuo, Xu, Qi, Zhou, Xiu-Qi, Li, Tian, Luo, Xiao-Long, Yuan, Zhong-Feng, Zhang, Peng, Zhang   +6 more
openaire   +2 more sources