Diterpenes from Euphorbia helioscopia

Yamamura, Shosuke; Shizuri, Yoshikazu; Kosemura, Seiji; Ohtsuka, Jiro; Tayama, Takao; Ohba, Shigeru; Ito, M.; Saito, Yoshihiko; Terada, Yukimasa

doi:10.1016/0031-9422(89)80360-7

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Nishiyama and Yamamura (1993)1

Introduction1

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2018

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Cited by 75 publications

(102 citation statements)

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“…Euphohelioscopin A (135; lathyrane skeleton) and euphoscopin A (136) were isolated in 1989 from Euphorbia helioscopia L. by Yamamura et al [52] A few years later, in 1993, Nishiyama and Yamamura reported the preparation of the cyclopentane derivative 134 on route to 135 and 136 (Scheme 23). [53] Scheme 23.…”

Section: Nishiyama and Yamamura (1993)mentioning

confidence: 98%

Progress in the Preparation of Jatrophane Diterpenes

Rinner

2015

Eur J Org Chem

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Section: Nishiyama and Yamamura (1993)mentioning

confidence: 98%

Progress in the Preparation of Jatrophane Diterpenes

Rinner

2015

Eur J Org Chem

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“…2 Previous reports on this plant mainly focused on diterpenoids, and up to now, almost 40 diterpenoids have been isolated. [3][4][5][6][7][8][9] During our investigation on E. helioscopia, seven compounds were isolated, 4 of which were new ones ( Figure 1). Herein, we describe their isolation and structure elucidation.…”

Section: Introductionmentioning

confidence: 99%

New Compounds from Euphorbia helioscopia and Absolute Configuration Determination by Computational Methods

He¹,

Zhu²,

Luo³

et al. 2010

Bulletin of the Korean Chemical Society

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The whole plant of Euphorbia helioscopia is an important traditional Chinese medicine. Fom its BuOH soluble extract, one new lactam (1), three new terpenoids (2-4) including a new naturally occurring compound, and three known compounds were isolated. Their structures were identified by spectroscopic evidences. In particular, the absolute configurations of side chain of compounds 1 and 2 were determined using computational methods.

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“…1). The Dd d(5) À d(2) À 0.69 for HÀC (12) in comparison to Dd d(5) À d(6) presented in Fig. 2 showed an up-field shift for HÀC (12) due to the migration of AcOÀC(13) to C (15).…”

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confidence: 95%