bahan alam 2
DESCRIPTION
senyawa steroid dan turunannyaTRANSCRIPT
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STEROID
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Apa itu steroid
• Steroid adalah senyawa yang mempunyai kerangka dasar karbon yang merupakan turunan dari 1,2-siklopentenoperhidrofenantren
Inti Steroid
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Beberapa contoh steroid
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Klasifikasi steroid
sterolBerdasarkan efek fisiologisnya
Asam-asam empedu
Hormon seks
Hormon adrenokortikoid
Aglikon kardiak
Sapogenin
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sterol
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Asam-asam empedu
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CH3
Hormon seks
Oestron Progeteron
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Hormon adrenokortikoid
Kortison Aldosteron
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Aglikon kardiak
Digitoksigenin Strofantidin
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Sapogenin
Diosgenin Sarsapogenin
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STEROID YANG ADA DIALAM
BERASAL DARI TRITERPEN
dalam jaringan hewanBerasal dari triterpen lanosterol
dalam jaringan tumbuhanBerasal dari triterpen sikloartenol
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Jaringan hewan
Jaringan tumbuhan
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Kolesterol Diosgenin
Solasodin 26-aminodihidrodiosgenin
SolanidinTomatillidin
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Vit. D2
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BEBERAPA HORMON STEROID ALAM
Menstimulasi organ seksual betina
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Androsteron
Menstimulasi organ seksual jantan
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Menstimulasi uterusMencegah peradangan
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Klasifikasi steroid
Berdasarkan kimia
Perbedaan masing-masing kelompokDitentukan oleh jenis substituen yang terikat pada atom karbon C-10, C-13 dan C-17
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Perbedaan masing-masing kelompokDitentukan oleh jenis substituen yang terikat pada atom karbon C-10, C-13 dan C-17
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Biogenetik
Steroid berasal dari asam asetat yang mengalami perubahan melalui asam mevalonat dan skualen menjadi triterpen lanosterol atau sikloartenol
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Ditinjau dari gugus fungsi yang ada, senyawa-senyawa disebelah termasuk senyawa apa
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a. Apa nama senyawa di atas (kiri dan kanan)
nama
b. Mengapa dimasukkan sebagai kelompok steroid
nama
c. Apakah reaksi diatas dapat berlangsung